1.in response to 回应,响应
He always takes the lead in response to the government's call.
他总是带头响应政府的号召 。
2.set off 引起,使爆炸
The powder immediately ignited and set off a chain reaction of explosions.
炸药立即点燃并引发了连环爆炸反应 。
3.be willing to 乐意做某事
We are looking for students who would be willing to assist in school newspaper.
我们正寻找愿意协助校报工作的学生 。
4.as far as 就……而言
As far as I can gather, he got involved in a fight.
据我了解,他卷入了一场争斗之中 。
5.engage in 从事于(参加)
The kinds of trade nations engage in are varied and complex, often a mixture of visible and invisible trade.
国家从事的贸易种类是多样的、复杂的,往往是有形贸易和无形贸易的混合 。