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- We must keep fully alert. 我们必须高度警惕。
- 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 these people under close surveillance. 对这些人我们要严密监视。
- 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 down the cost of production. 我们必须降低成本。
- We must keep our weapons up to date. 我们必须使武器现代化。
- We must keep a firm grasp on our central task. 我们必须牢牢抓住我们的中心工作。
- We must keep abreast of [with] the times. 我们必须跟上时代。
- We must keep everything in the room in order . 我们必须使房间里的一切东西井然有序。
- We must keep firmly to the socialist road. 我们要坚持社会主义道路。
- We must keep in close contact with the masses. 我们必须密切联系群众。
- We must keep in mind that pride go before a fall. 我们必须牢记，骄者必败。
- We must keep on the right side of the captain. 我们必须和船长保持好关系。
- We must keep the chemicals away from the fire. 我们必须使这些化学品远离火烛。
- We must keep the children from going near the well. 我们一定不要让小孩到井边去。
- We must keep the pumps in good working order. 我们要使这些水泵处于完好状态。
- We must keep this overall judgement in mind. 要看到这个全局。
- We must keep up with the times [world affairs]. 我们必须跟上时代[及时了解世界的情况]。
- Suddenly he found himself awake and fully alert. 突然他发觉自己醒了过来，而且高度警觉。
