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。
Careful maintenance can extend the life of your car.
精心保养可延长汽车寿命。
You'll have to be careful how you frame the question.
如何提出这个问题，你得慎重。