He asked out of curiosity.

Scientists have made many important discoveries simply out of curiosity.

科学家的很多重要发现都是单纯出自好奇心.

Out of curiosity, he pulled down the handle of the fire alarm.

出于好奇, 他把火警器的手把拉了下来.

He was finally declared out of danger.

最后他们宣布他脱离危险.

We were relieved to hear that she was out of danger.

听说她脱险了,我们的心才放下来.

The doctor said that his life was out of danger.

医生说他的生命已经脱险了.

He was very ill last week but is now out of danger.

他上星期病得很重,但现在已脱离了危险.

He has already got out of danger.

他已脱险.

The patient was out of danger.

病人已经脱离危险了.

He has been very ill, but he is now out of danger.

他曾病得很厉害, 但现在已脱离危险期.

This fashion is out of date.

这种式样过时了.

Their computer system is years out of date.

他们的电脑系统已过时多年.

My passport is out of date.

我的护照已经过期了.

Once bronze became available, stone tools began to go out of date.

一旦铜的提炼成为可能, 石器便开始淘汰.

...out-of-date nuclear power stations.

废弃的核电站

Your idea is completely out of date.

你的观点完全过时了.

This type of machine has been out of date and it must be brushed up.

这种机器已经过时了,必须要改进.

This directory is helplessly out of date.

这本通讯地址录过时了,没有用.

Business plans are noted for often quickly becoming out of date.

业务计划指出的往往迅速成为过时.

Suddenly she felt old and out of date.

她猛然觉得自己老了，跟不上时代了。

Are they out of date or still helpful to students?

你觉得这些方式过时了还是认为依然对学生有帮助?