They don't last long no matter how careful you are.
不管你如何仔细，他们都维持不了很久。
Be careful with that ─ it cost a lot of money.
小心别弄坏那东西，它可值钱了。
Careful consideration should be given to issues of health and safety.
健康与安全的问题应该认真予以考虑。
She was careful not to let her control slip.
她小心翼翼，不让自己失控。
Word always gets out no matter how careful you are.
无论你多么小心，总会有消息走漏。