1.trigger 引发,激发;起动,触发;引爆(炸弹)
The trigger for the strike was the closure of yet another factory.
触发这次罢工的是另一家工厂的关闭
。2.derivative 派生物,衍生物;派生词;(金融)衍生工具(产品)
Crack is a highly potent and addictive derivative of cocaine.
强效纯可卡因是一种药效极强、容易使人上瘾的可卡因制剂
。3.expire 到期,失效;死亡;呼气,吐气;(任期)届满
When does your driving licence expire?
你的驾照什么时候到期?
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