1.led to 导致

例句:Frustration, anger and desperation have led to a series of wildcat strikes.
挫败感、愤怒和绝望引起了一系列自发性的罢工。

2.reluctant to 不愿意的；勉强的

例句:She's reluctant to take all the credit.
她不愿接受所有荣誉。

3.put off 推迟

例句:Women who put off having a baby often make the best mothers.
晚育的女性经常会成为最优秀的母亲。

4.Thanks to 由于；幸亏

例句:Thanks to that job I became an avid reader.
多亏了那份工作我才成了一个喜欢阅读的人。