I said I'd go, just to keep him happy.
我说过我要去只是为了让他高兴。
I'm sure she's keeping something back from us.
我肯定她有什么事瞒着我们。
Some teachers find it difficult to keep their classes in order.
有些教师觉得难以维持课堂秩序。
Keep down! You mustn't let anyone see you.
蹲下！一定不要让人看见你。
I keep thinking back to the day I arrived here.
我不断回想起刚到这儿那一天的情景。