1.buy off 收买

The thief tried to buy off the policeman, but he didn't succeed.

这贼企图贿赂警察，但他未达到目的,~jVVCPk+^5mu。

2.hush up 掩盖，防止…张扬出去

They tried to hush up the matter they hijacked a lorry driver.

他们想尽各种方法掩盖他们曾抢劫过一名卡车司机的事实)p2b=LdTP#.5~;]t。

3.impose … on … 施加……于……

Congress can impose strict conditions on the bank.

国会可能会迫使这家银行接受苛刻的条件)0EK%|f5[20c。

4.in force 生效

The rule has been in force since 1 May 2011.

该规定于2011年5月1日起实行X2VYdRqqr=aq1]。