• We requested that he look into the matter, but he just seemed to turn his back on our request.

• Did she really turn her back on his proposal?她真的拒绝了他的求婚？

Dialogue:

Nancy: You look upset these days. What's troubling you?
Selma: I've requested to take a leave from work so that I can spend our annual holiday in Spain with my family. But our boss turned it down by saying that the company is short of hands.
Nancy: Did you explain your situation and ask him again?
Selma: Yes, I did. But he just turned his back on my request.
Nancy: Maybe you can change your plan and put it off till later.

It is said that he got many of the spare parts into China by the back door.据说他把很多备件非法偷运到中国境内。

Most government officials knew pretty well that this rubbish came into the country by the back door, but they did not know who exactly had given the smugglers the green light.

The manager knew that the two new employees came in by the back door, but he didn't know exactly who were at the back. 总经理知道那两个人是通过后门进来的，但是他不清楚到底谁是他们的后台。

In every country and regardless of their social systems, there must be someone in the house who will have to bring home the bacon.

Dialogue:

Frank: I'm feeling under the weather(感到身体不舒服）. I'm not in the mood for doing anything today.
John: Play hooky（逃学，开小差）. I won't spill the beans（泄密）.
Frank: I know, but I can't. I'm swamped with work（有一大堆工作得做）. My job is no picnic（不是轻松的事）, you know.
John: Well, hang in there. In the long run, you'll be sitting pretty（处于有利的地位；过上优裕的生活）.
Frank: I hope so. But I have to work hard and bring home the bacon.

• Although the four of them robbed the bank with joined efforts, it was Joe who had been left holding the bag.

Dialogue:

Martha: Do you know what's happened to Frank?

Nancy: Not an inkling. What's happened?

Martha: He was caught stealing a file from a company.

Nancy: Sorry to hear that. He should have mended his steps(注意自己的言行）.

Martha: But the job was engineered by someone else.

Nancy: Did that someone else stand up?

Martha: Nobody likes to face the music（面对惩罚）， of course.

Nancy: So it was Frank who was left holding the bag?

Martha: yeah.