It said the government could use force, if necessary,to keep states in the Union.

VOA: special.2009.07.16

So what happens is, Freud described a lot of normal life in terms of different ways we use to keep that horrible stuff from the id making its way to consciousness.

弗洛伊德描述了，很多我们会在日常生活中使用的方法,我们用这些方法,来阻止来自本我的原始欲望,进入到意识之中。

耶鲁公开课 - 心理学导论课程节选

With Facebook, I tend to use it to keep in contact with old friends

我用Facebook和老朋友保持联系，

用社交网站找到的人 - SpeakingMax英语口语达人