You know the sayingyou have a minister on board, watch out for lousy weather . 你听说过这句谚语吧船上有牧师，可要当心坏天气。
I'm only a commom ignorant girl; and in my station i have to be careful . 我不过是个普普通通没有知识的女孩子；处在我的地位不得不当心。
Yes, that's all right, said the chief, thoughtfully, but we must be careful not to overdo it . 对啊，这很好，头目深思着说，但是我们要当心，不要做得太过分。
The old man limped on before, and warning her of the downward step, which he achieved himself with no small difficulty . 老头儿蹒跚地走在前面；他自己下台阶很不方便，却警告她要当心些。
Heart failure is said to occur when the heart is unable to pump blood at a rate sufficient to meet requirement of the tissues . 当心脏搏出血液的速度不能满足组织需要时，就发生心力衰竭。
I think it better, however, not to complain to miss bulstrode. one has to be on one's guard when dealing with that one ! 可是我想还是不去向布尔斯德罗德小姐抱怨。跟这个女人打交道，可要当心点。
Be on your guard, and do not betray yourself, should he mention meyourself! alas! you have nothing to betraynothing to fear . 请你当心，万一他提到我，不要露了马脚。唉！你没有什么可以露马脚的，你无所恐惧。
We gotta watch ourselves around this jane character 我们在这个珍面前可要当心点
Children , be careful not to drop your drinks 孩子们，当心点，别洒了你们的饮料。
