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- We must keep this secret from them. 我们必须对他们保守这件事的秘密。
- We must keep this matter secret from him. 这件事我们要保密,不能让他知道。
- We must keep this secret. 我们必须保守这个秘密。
- We must keep this overall judgement in mind. 要看到这个全局。
- We must keep this lesson in mind. 我们要记住这个教训。
- We must keep the password secret from the spies. 我们必须对暗语保密，不让特务知道。
- We must keep the matter a secret. 这事我们必须保密。
- We must not let the news of this secret invention get out. 我们不能让这秘密发明的消息泄露出去。
- We must try to keep this from getting dirty. 我们一定要使这个保持干净。
- We must keep an vigilant eye upon imperialism. 我们必须对帝国主义保持警戒。
- We must keep to the style of plain living. 我们必须保持朴实生活的作风。
- We must keep our spending in check this month. 我们必须控制这个月的开销。
- This is one of the reasons we must keep in mind. 这是我们必须记住的原因之一。
- We must keep enough troops to safeguard this front. 我们必须留置足够的兵力，守卫这个阵地。
- He kept this secret under his hat for a long time. 他保守这个秘密很长一段时间了。
- We must keep a secret of the things being discussed here . 我们这儿讨论的事必须保密。
- You must keep this sentence in mind. 你必须记住这个句子。
- I can't keep this secret anymore and I just need to get it off my chest. 我不能再保守这个秘密了，我需要把我心里的烦恼倾吐出来。
- We must keep a secret of the things being discussed here. 我们须对正在讨论的问题保密。
- You must keep this firmly in mind. 这一点你必须牢牢记住。
