影片对白  Quid pro quo. You scratch my back, I scratch yours.

我观之我见  狱警Bob和狱友Cherry的死对他的触动非常大，他已经意识到这次计划可能会牺牲很多生命。尽管如此他并不想放弃拯救哥哥的计划。他能做的只是尽力防止其他人的死亡。

考考你  一展身手

3. Quid pro quo

拉丁文，意思是"An equal exchange or substitution, one thing for another; something for something公平交易"，例如：I think it should be quid pro quo--you mow the lawn and I'll take you to the movies.

4. Scratch someone's back

意思是"Do someone a favor in hopes that a favor will be returned"，例如：I don't mind driving this time--she's scratched my back plenty of times.

口语中常用到的表达是You scratch my back and I'll scratch yours. 例如：If you do the laundry I'll do the cooking--you scratch my back and I'll scratch yours.

5. In deep

"卷入很深无法摆脱"，通常指商业上的投资，例如：He was in deep with the other merchants and couldn't strike out on his own.

此处的意思类似于 in deep water（卷入麻烦很深），例如：The business was in deep water after the president resigned.

文化面面观

United States Federal Witness Protection Program 美国司法中的证人保护

In the United States, the Witness Protection Program (also known as the Witness Security Program, or WITSEC) is established by the Organized Crime Control Act of 1970, which in turn sets out the manner in which the U.S. Attorney General may provide for the relocation and protection of a witness or potential witness of the federal government, or for a state government in an official proceeding concerning organized crime or other serious offenses.

Witness protection is the process in which witnesses, such as those who testify in criminal trials, are protected against intimidation before their testimony or criminal retaliation after. The U.S. Federal Government both relocates and gives new identities to witnesses who risk their lives by giving testimony as well as providing financial and employment aid. To help avoid discovery, witnesses are expected to sever all ties with former acquaintances. According to the agency, "No program participant following security guidelines has ever been harmed while under the active protection of the Marshals Service"; conversely, nearly all of the witnesses who were harmed had either failed to fully comply, often at times contacting old acquaintances, or had already left the program.

The Federal Government also gives grants to the states to enable them to provide the same program. The federal program is called WITSEC (the Federal Witness Protection Program) and was founded in the late 1960s by Gerald Shur when he was in the Organized Crime and Racketeering Section of the United States Department of Justice. Most witnesses are protected by the U.S. Marshals Service, while protection of incarcerated witnesses is the duty of the Federal Bureau of Prisons.