keep afloat: 使漂浮不沉，使流通
I was sure the "beauty" could not keep afloat for a long time.
我断定这艘“美人号”不会浮在水面上太久了。
In the seven months after the bankruptcy filing of g. m., which taxpayer dollars helped keep afloat, various law firms and other advisers received nearly$ 90 million.
在通用汽车申请破产保护后7个月内，通用靠纳税人的钱来维持，不同的律师事务所和其他顾问收取了将近9千万美元。

out of line: 出格，过分
China's counter-attack on poultry and auto parts is not out of line.
中国就肉鸡和汽车零部件发起反击并不是出格之举。
He can get pretty tough if he thinks anyone is out of line.
如果他认为什么人太过分了，他会变得非常强硬。

be sick of: 对…厌倦
Play can make one fresh and cheerful so that one may not be sick of his work.
玩耍能使一个人精力充沛，心情愉快，使人不至于厌倦工作。

stand up for: 坚持，支持
Meanwhile, america needs to stand up for pakistan's democratic leaders, who are on its side.
同时，美国也必须支持巴基斯坦民主派领导人，因为他们站在巴军方一边。
Psychiatrist leo kanner used to stand up for parents.
精神病专家leo kanner过去一直站在家长这边。