1.take effect 生效；起作用

例句:International sanctions were beginning to take effect.
国际制裁开始起作用了。

2.struck down 打倒；击杀

例句:Frank had been struck down by a massive heart attack.
弗兰克的身体已经被一场严重的心脏病拖垮了。

3.shrug off 摆脱；抖去

例句:It took me a long time to shrug off the effect of a drug.
我花了好长时间才摆脱了药物的影响。

4.let off 放出；准许

例句:In those days they didn't let you off work to go home very often.
在当时，他们并不经常准许请假回家。