trigger

verb

/ˈtrɪɡə(r)/

/ˈtrɪɡər/

Verb Forms

present simple I / you / we / they trigger	/ˈtrɪɡə(r)/ /ˈtrɪɡər/
he / she / it triggers	/ˈtrɪɡəz/ /ˈtrɪɡərz/
past simple triggered	/ˈtrɪɡəd/ /ˈtrɪɡərd/
past participle triggered	/ˈtrɪɡəd/ /ˈtrɪɡərd/
-ing form triggering	/ˈtrɪɡərɪŋ/ /ˈtrɪɡərɪŋ/

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trigger something (off) to make something happen suddenly发动；引起；触发 synonym set off
- Nuts can trigger off a violent allergic reaction.坚果可以引起严重的过敏反应。
Extra Examples
- A wide range of emotionally stressful events may trigger a relapse.多种令人情绪紧张的事情都可能引起旧病复发。
- An influx of refugees has triggered disturbances.难民的涌入引发了骚乱。
- Even the smell of oranges can trigger her migraine.甚至橘子的味道都能引发她的偏头痛。
- He suffers from a brain disorder that can trigger off convulsive fits.他患了脑疾，可能会引发惊厥。
Topics Change, cause and effectb2
trigger something to cause a device to start functioning开动；起动 synonym set off
- to trigger an alarm触发警报器

noun

/ˈtrɪɡə(r)/

/ˈtrɪɡər/

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the part of a gun that you press in order to fire it（枪的）扳机
- to pull/squeeze the trigger扣扳机
- He kept his finger on the trigger.他的手指一直勾着扳机。
Oxford Collocations Dictionary
verb + trigger
- press
- pull
- squeeze
- …
trigger + noun
- finger
- guard
- mechanism
- …
phrases
- have your finger on the trigger
See full entry
something that is the cause of a particular reaction or development, especially a bad one（尤指引发不良反应或发展的）起因，诱因
- trigger for something The trigger for the strike was the closure of yet another factory.触发这次罢工的是又一家工厂被关闭了。
- trigger to something Intense sunlight may be a trigger to skin cancer.强烈的阳光可能是皮肤癌的诱因。
- trigger to do something a radical plan that would have served as a trigger to create chaos in the country一项激进的计划可能会引发该国的混乱
Topics Change, cause and effectc1

Word Originearly 17th cent.: from dialect tricker, from Dutch trekker, from trekken ‘to pull’.