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either of the two long parts that stick out from the top of the body and connect the shoulders to the hands 臂；手臂；上肢 
He escaped with only a broken arm. 他得以逃生，只是断了一条胳膊。 Pearl wrapped her arms around his waist and hugged him tightly. 珠儿搂住他的腰，紧紧地拥抱着他。 She threw her arms around his neck. 她张开双臂搂住他的脖子。 He was running forward, waving his arms. 他挥舞着双臂向前跑。 - by the arm
The officer grabbed him by the arm (= grabbed his arm). 警察抓住了他的手臂。 - in somebody's arms
She cradled the child in her arms. 她怀抱着小孩。 They fell asleep in each other's arms (= holding each other). 他们互相搂抱着睡着了。 - on somebody's arm
He walked in with a tall blonde woman on his arm (= next to him and holding his arm). 他挽着一个高个子金发女人走进来。 - under somebody's arm
He was carrying a number of files under his arm (= between his arm and his body). 他腋下挟着一些卷宗。 He held the dirty rag at arm's length (= as far away from his body as possible). 他拎着脏抹布，身子离得远远的。 They walked along arm in arm (= with the arm of one person linked with the arm of the other). 他们臂挽着臂一路走着。 She touched him gently on the arm. 她轻轻地碰了碰他的胳膊。 Vincent folded his arms across his chest and turned to walk away. 文森特双臂交叉在胸前，转身走开了。 He has a tattoo on his upper right arm. 他的右上臂有一个纹身。
Collocations Physical appearancePhysical 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
小的／小珠般圆亮的／亮晶晶的／闪闪发亮的／贼溜溜的眼睛 - 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
- 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
- muscular/chubby/(informal, disapproving) flabby thighs
- 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 ExamplesTopics Bodya1He held out his arms with a broad smile. 他满脸笑容地张开了双臂。 He placed a comforting arm around her shoulder. 他一只手臂搂住她的肩头，安慰她。 He pulled her into his arms and kissed her. 他把她拥入怀中，吻了她。 His arms slid around her. 他的双臂在她周身滑动。 He ran towards her and flung his arms around her. 他奔向她，一把搂住了她。 Kris collapsed into her mother's waiting arms. 克里斯瘫倒在母亲伸出的臂弯里。 Her arms tightened convulsively around the child. 她一下子紧紧搂住了孩子。 She lay curled up in the crook of his arm (= where the arm bends at the elbow). 她蜷缩着躺在他的臂弯里。 She moved closer to her father and took his arm (= linked her arm through his). 她靠近父亲，挽起了他的胳膊。 The couple linked arms and set off along the beach. 夫妇俩挽着手臂，沿海滩向前走。 He stood there with crossed arms, looking angry. 他双臂合抱站在那里，看样子很生气。 The figure in the boat raised an arm. 那条船上的人举起了一只胳膊。 He used his good arm to support his weight. 他用那只好胳膊支撑身体的重量。 His arm hung awkwardly against his side. 他的胳别别扭地垂在身旁。 His arms clutched his stomach. 他双臂紧捂着肚子。 Lucy felt the warm sun on her bare arms. 露西感觉得到温暖的阳光照在她裸露的双臂上。 She carried the dog under one arm. 她把小狗夹在腋下。 She ducked his flailing arms. 她避开了他挥舞的胳膊。 the muscles of the upper arm 上臂的肌肉
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the part of a piece of clothing that covers the arm 袖子 The arms will need shortening. 手臂需要缩短。
the part of a chair, etc. on which you rest your arms 扶手 
She perched on the arm of his chair. 她坐在他的椅子扶手上。
a long narrow part of an object or a machine, especially one that moves 臂状物（尤指可移动的物体部分或机器部件） a robotic arm 机械臂
a long narrow piece of water or land that is joined to a larger area 狭长港湾；（连接较大地区的）狭长地带 - [usually singular] arm (of something)
a section of a large organization that deals with one particular activity 分部；职能部门 the research arm of the company 公司的科研部门 The bank plans to sell part of its US finance arm. 该银行计划卖掉其设在美国的金融部门的部分业务。
part of body身体部位
of clothing衣服
of chair椅子
of a machine
of water/land水；陆地
of organization组织机构
Word Originnoun Old English arm, earm, of Germanic origin; related to Dutch arm and German Arm.
Idioms
(with) arms akimbo
as long as your arm
a babe in arms
- (old-fashioned)
a very small baby that cannot yet walk 襁褓中的婴儿
bear arms
- (old use)
to be a soldier; to fight 当兵；打仗
chance your arm
- (British English, informal)
to take a risk although you will probably fail 冒险一试；碰碰运气
cost/pay an arm and a leg
- (informal)
to cost/pay a lot of money （使）花一大笔钱
fold your arms
to put one of your arms over the other one and hold them against your body 双臂交叉在胸前 He stood watching her with his arms folded across his chest. 他站在那里看着她，双臂交叉在胸前。 She folded her arms and stared at him. 她双臂合抱在胸前，直视着他。
fold somebody in your arms
- (literary)
to put your arms around somebody and hold them against your body 拥抱；搂住
give your right arm for something/to do something
keep somebody at arm’s length
the long arm of something
a shot in the arm
something that encourages somebody/something or gives them the help they need 鼓舞的力量；令人振奋的事情；强心针 Their enthusiasm has been a shot in the arm for all of us. 他们的热情对我们所有人来说都是一剂强心针。
twist somebody’s arm
- (informal)
to persuade or force somebody to do something 劝说；强迫；生拉硬拽；施加压力
with open arms
if you welcome somebody with open arms, you are extremely happy and pleased to see them 热烈地；热情地；诚挚地