take care
be careful 当心；注意；小心
In busy city streets special care should be taken．在繁忙的城市街道上，应该特别小心。
Care should be taken to see that a letter is properly addressed．要注意把信封上的地址写对。
Take care that you don't slip on the icy roads．注意，不要在结了冰的路上滑倒。
Take care not to make the same mistake again．当心，不要再犯同样的错误。