They don't last long no matter how careful you are.

　　不管你如何仔細，他們都維持不了很久。

　　Be careful with that ─ it cost a lot of money.

　　小心別弄壞那東西，它可值錢了。

　　Careful consideration should be given to issues of health and safety.

　　健康與安全的問題應該認真予以考慮。

　　She was careful not to let her control slip.

　　她小心翼翼，不讓自己失控。

　　Word always gets out no matter how careful you are.

　　無論你多么小心，總會有消息走漏。