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any of the hard white structures in the mouth used for biting food 牙；齿 
I've just had a tooth out at the dentist's. 我刚在牙科诊所拔了一颗牙。 to brush/clean your teeth 刷牙 tooth decay 龋齿 She answered through clenched teeth (= opening her mouth only a little because of anger). 她咬牙切齿地回答。 The cat sank its teeth into his finger. 那只猫狠狠咬住了他的手指。 She had to have a tooth pulled (= removed). 她不得不拔掉一颗牙齿。
Collocations Physical appearancesee also buck teeth, false teeth, milk tooth, wisdom toothTopics Bodya1Physical appearance 外貌 - A person may be described as having:
描述一个人的长相可用 have 一词：
Eyes 眼睛 - (bright) blue/green/(dark/light) brown/hazel eyes
（明亮的）蓝／绿／（深／浅）棕色／浅绿褐色眼睛 - deep-set/sunken/bulging/protruding eyes
凹陷的／凸出的眼睛 - small/beady/sparkling/twinkling/(informal) shifty eyes
- piercing/penetrating/steely eyes
敏锐的／锐利的眼睛；冷冰冰的眼神 - bloodshot/watery/puffy eyes
布满血丝的／水汪汪的／肿胀的眼睛 - bushy/thick/dark/raised/arched eyebrows
浓密的／扬起的／弓形的眉毛 - long/dark/thick/curly/false eyelashes/lashes
长长的／浓密的／弯曲的／假的眼睫毛
Face 脸 - a flat/bulbous/pointed/sharp/snub nose
塌／蒜头／尖头／尖／短平而上翘的鼻子 - a straight/a hooked/a Roman/(formal) an aquiline nose
挺直的鼻子；鹰钩鼻；高鼻梁；鹰钩鼻 - full/thick/thin/pouty lips
丰满的／厚／薄／翘嘴唇 - dry/chapped/cracked lips
干的／皲裂的／干裂的嘴唇 - flushed/rosy/red/ruddy/pale cheeks
发红的／红润的／苍白的面颊 - soft/chubby/sunken cheeks
柔嫩的／胖乎乎的／凹陷的面颊 - white/perfect/crooked/protruding teeth
洁白的／完好无缺的／参差不齐的／凸出来的牙齿 - a large/high/broad/wide/sloping forehead
大大的／高高的／宽大的／后倾的前额 - a strong/weak/pointed/double chin
硬朗的／瘦削的／尖／双下巴 - a long/full/bushy/wispy/goatee beard
长／大／浓密的／一小撮／山羊胡子 - a long/thin/bushy/droopy/handlebar/pencil moustache
长长的／稀疏的／浓密的／耷拉着的／翘／细直的八字胡
Hair and skin 头发和皮肤 - pale/fair/olive/dark/tanned skin
苍白的／白皙的／橄榄色的／黝黑的／晒黑的皮肤 - dry/oily/smooth/rough/leathery/wrinkled skin
干性的／油性的／光滑的／粗糙的／有皱纹的皮肤 - a dark/pale/light/sallow/ruddy/olive/swarthy/clear complexion
黝黑的／苍白的／白皙的／蜡黄的／红润的／浅褐色的／黝黑的／无瑕的面容 - deep/fine/little/facial wrinkles
深深的／细小的／小的／面部的皱纹 - blonde/blond/fair/(light/dark) brown/(jet-)black/auburn/red/(British English) ginger/grey hair
- straight/curly/wavy/frizzy/spiky hair
直发；鬈发；波浪形的／鬈曲的／刺猬式的头发 - thick/thin/fine/bushy/thinning hair
厚密的／稀疏的／纤细的／浓密的／逐渐稀少的头发 - dyed/bleached/soft/silky/dry/greasy/shiny hair
染了色的／漂白了的／柔顺的／丝滑的／干性的／油性的／有光泽的头发 - long/short/shoulder-length/cropped hair
长／短／齐肩／剪短了的头发 - a bald/balding/shaved head
秃头；开始秃顶的头；剃光了的头 - a receding hairline
后移的发际线 - a bald patch/spot
秃了的一块 - a side/centre(British English) parting
偏分；中分
Body 身体 - a long/short/thick/slender/(disapproving) scrawny neck
长／短／粗／细／干瘦的脖子 - broad/narrow/sloping/rounded/hunched shoulders
宽／窄／斜／圆／耸肩膀 - a bare/broad/muscular/small/large chest
赤裸的／宽阔的／肌肉发达的胸膛；小胸；大胸 - a flat/swollen/bulging stomach
扁平的／鼓胀的／鼓起的肚子 - a small/tiny/narrow/slim/slender/28-inch waist
纤细的／28英寸的腰 - big/wide/narrow/slim hips
大的／宽的／窄小的／苗条的臀部 - a straight/bent/arched/broad/hairy back
直的／弯曲的／弓着的／宽大的／多毛的背部 - thin/slender/muscular arms
瘦削的／细长的／肌肉发达的臂膀 - big/large/small/manicured/calloused/gloved hands
大的／小的／修剪整齐的／有老茧的／戴着手套的手 - long/short/fat/slender/delicate/bony fingers
长的／短的／粗的／细长的／纤细的／瘦削的手指 - long/muscular/hairy/shapely/(both informal, often disapproving) skinny/spindly legs
长的／肌肉发达的／多毛的／有曲线美的／皮包骨的／干瘦的腿 - muscular/chubby/(informal, disapproving) flabby thighs
肌肉发达的／胖乎乎的／肥胖的大腿 - big/little/small/dainty/wide/narrow/bare feet
大的／小的／娇小可爱的／宽的／窄的／光着的脚 - a good/a slim/a slender/an hourglass figure
好的／修长的／苗条的／沙漏形身材 - be of slim/medium/average/large/athletic/stocky build
有着苗条的／中等的／普通的／大块头的／健壮的／矮壮的身材
Extra ExamplesBilly's first tooth is now through. 比利长出了第一颗牙。 Her smile showed crooked teeth. 她一笑便露出了参差不齐的牙齿。 Her teeth flashed as she smiled. 她笑的时候牙齿闪闪发亮。 His pipe was firmly clamped between his teeth. 他用牙齿紧叼着烟斗。 I lost three teeth in the fight. 打斗中我掉了 3 颗牙。 I used to be self-conscious of my prominent teeth. 我过去为自己的龅牙感到难为情。 Mink have razor-sharp teeth. 水貂有锋利的牙齿。 She answered the phone with a cigarette between her teeth. 她叼着香烟接了电话。 She wore a brace to correct her gappy teeth. 她戴牙箍矫正牙缝大的问题。 The cat came in with a mouse in its teeth. 那只猫叼了一只老鼠进来。 Sugar rots your teeth. 糖会蛀蚀牙齿。 Their teeth were chattering with cold. 他们冻得牙齿咯咯响。 Skyscrapers rose like jagged teeth. 摩天大楼像参差不齐的牙齿一样耸立着。
Oxford Collocations Dictionaryadjective- big
- huge
- gappy
- …
- have
- brush
- clean
- …
- bite somebody/something
- sink into somebody/something
- snap together
- …
- against the/your tooth
- between the/your tooth
- in the/your tooth
- …
a narrow, pointed part that sticks out of an object 齿状部分；齿 
the teeth on a saw 锯齿 The teeth of the cog should fit into these grooves. 齿轮的齿应该嵌入这些凹槽中。
Word OriginOld English tōth (plural tēth), of Germanic origin; related to Dutch tand and German Zahn, from an Indo-European root shared by Latin dent-, Greek odont-.
Idioms
armed to the teeth
having many weapons 武装到牙齿；全副武装
bare your teeth
to show your teeth in an aggressive and threatening way （凶狠地）龇牙咧嘴
by the skin of your teeth
- (informal)
if you do something by the skin of your teeth, you only just manage to do it 刚好；勉强 He escaped defeat by the skin of his teeth. 他侥幸逃脱了失败。
cut your teeth on something
to do something that gives you your first experience of a particular type of work 从…中获得初步经验；初次涉足 She cut her teeth on local radio. 她在当地电台上剪了牙。
cut a tooth
(of a baby 婴儿 to grow a new tooth 出牙；长出新牙
an eye for an eye (and a tooth for a tooth)
- (saying)
used to say that you should punish somebody by doing to them what they have done to you or to somebody else 以眼还眼；以牙还牙 They advocate a justice system that works on the principle of an eye for an eye. 他们提倡一个以牙还牙的司法体系。
fight tooth and nail
get the bit between your teeth
- (informal)
to become very enthusiastic about something that you have started to do so that you are unlikely to stop until you have finished 果断地做某事；义无反顾
get your teeth into something
give your eye teeth for something/to do something
gnash your teeth
to press or hit your teeth together because you feel angry; to feel very angry and upset about something, especially because you cannot get what you want （尤因不获所求而气得）咬牙切齿 He'll be gnashing his teeth when he hears that we lost the contract. 他要是听说我们丢了这份合同，准会气得咬牙切齿。 The news caused great wailing and gnashing of teeth. 这个消息引起了巨大的哀号和咬牙切齿。
grit your teeth
to bite your teeth tightly together 咬紧牙关 to be determined to continue to do something in a difficult or unpleasant situation 下定决心；鼓起勇气
have a sweet tooth
- (informal)
to like food that contains a lot of sugar 爱吃甜食
have teeth
- (informal)
(of an organization, a law, etc. 组织、法律等 to be powerful and effective 具有强大威力；有杀伤力
Hell’s teeth
- (British English, old-fashioned, informal)
used to express anger or surprise （表示气愤或吃惊）可恶，天哪 Hell’s teeth, I promised I’d be back by two. 我发誓我会在两点前回来。
in the teeth of something
kick somebody in the teeth
to treat somebody badly or fail to give them help when they need it 粗暴对待某人；使极度失望
a kick in the teeth
- (informal)
something that hurts somebody/something emotionally; a great disappointment 极度的失望；沉重的打击；重大的挫折 The job losses are a kick in the teeth for the union. 失业对工会是一种打击。
lie through your teeth
like pulling teeth
- (informal)
used to say that it is very difficult to make somebody do something 迫切想要；巴不得有 It's like pulling teeth trying to get him to talk. 就像拔牙想让他说话。
long in the tooth
- (humorous, especially British English)
old or too old 出牙；长出新牙
red in tooth and claw
involving opposition or competition that is violent and without sympathy 残酷无情；血淋淋；决不宽容 nature, red in tooth and claw 残酷无情的大自然
set somebody’s teeth on edge