1、It took them all day to break the back of the job.
他們干了一整天才把工作的最主要部分完成了。

2、Defeat in North Carolina seemed to break the back of the entire fundamentalist crusade.
在北卡羅來(lái)納的失敗，似乎使整個(gè)原教旨主義運(yùn)動(dòng)再也無(wú)能為力了。

3、We are casting about how to break the back of the work.
我們正在考慮怎樣完成這件工作的最艱巨部分。

4、I should break the back of this piece of the work by this weekend.
到這個(gè)周末我應(yīng)該完成這件工作中最艱巨的部分。