1. shake up 改变；动摇
Now Erskine is trying to shake up the status quo.
现在，厄恩斯金正在尝试改变现状eHrsJ.KH.=t;8V&u2。

2. be charged with 肩负着……责任；有权……
The United Nations Security Council is charged with the maintenance of international peace and security.
联合国安全理事会负有维持国际和平与安全的责任^DB9Qn|QJstR*fD。

3. sign off on 认可；同意
Contrary to expectations, Gates did not sign off on a finalized version of the concept before stepping down.
出人意料的是，下台之前，盖茨在最后环节并没有签署认可这一概念的文件%_J*V1*R-s。

4. let loose 发/说/喊出；释放；放任
Their anger had to be let loose, and if you weren't there, they would have done the same thing to someone else.
他们需要发泄怒火，要不是你在那儿，他们也会对别人做出同样的事情5HFClbmA*PSYYF143mX。