The boy sat there, playing his toy leisurely and carefree.

Take a carefree and leisurely trip.

来一个无忧无虑、从容悠闲的旅行.

Be careful when you back into the garage, the doorway is very narrow.

你倒车入库时要小心,门道很窄.

The captain is careful for the safety of the passengers.

船长关注旅客们的安全.

If it's lost, it's lost. Just be more careful from now on.

丢了就丢了吧, 以后小心点.

You've got to be careful when you do this job.

干这活儿非得仔细才行.

The British Government was careful not to act unilaterally.

英国政府小心行事，避免单边采取行动。

If you are not careful, you'll land in trouble.

要是你不小心就会陷入麻烦中.

A philosopher once said, "Be careful what you wish for; you might get it."

一位哲学家曾说过：“别轻易许愿——你可能会如愿以偿。”

Take a careful sight before firing.

发射前仔细瞄准.

Masonry is a careful skill.

砖石工艺是一种精心的技艺.

The men were expert, thorough and careful.

那些人业务精通，作风严谨，态度认真。

Be careful what you say to Mr Smith, for he is like tinder.

你跟史密斯先生说话要小心, 因为他好发脾气.

Be careful about the precision of detail in your descriptions.

在你的描述中,必须认真地考虑细节的精确度.

Be extra careful about personal hygiene.

要非常注意个人卫生。

Be careful ( about / in ) crossing the road.

过马路要 留神.

People should be careful about their possessions and not leave them lying around.

人们应该小心自己的财物，不要随便乱放。

She is too careful about her dress.

她过分讲究衣着.

In my position I have to be careful about getting involved in anything of that sort.

处于这位置,我得小心不要卷入那种事.

Sick people should be careful about their diet.

病人对饮食要多加检点.

I think you should be careful about talking of the rebels as heroes.

我觉得你说话应该小心，不能把反叛分子当英雄。