First of all, many pupils suggest that history is one of the less interesting school subjects and that governments should spend the time and money on subjects that are more useful.

首先，许多学生认为历史是一门不那么有趣的学校科目，政府应该把时间和金钱花在更有用的科目上。

youdao

A credible inflation target of 2 or 3 per cent, maintained over a credibly long period of time, is useful.

在相当长的一段时期内，维持2%或3%这种可靠的通胀率目标，是有用的。

youdao

But taking even short periods of time off is useful. Here's what I suggest you to do.

但是，一小段时间的休假也是有效的。

youdao

But the kind of exercise we did last time is a useful exercise for those of you who are Econ majors.

但是我们上节课做的练习,对经济学专业的同学是非常有用的

耶鲁公开课 - 博弈论课程节选

So you can scroll back through your history, which is also useful for time's sake.

所以我们可以滚回到我们的历史记录，这个可以节约我们的时间。

哈佛公开课 - 计算机科学课程节选

This is a wonderful read for anyone given to Schadenfreude, but at the same time it is a useful lesson for those who think there is anything easy about direct investment in brand-new markets.

ECONOMIST: Doing business in China: The perils of Pat | The

Mr Hunzvi's trademarks are violence and inflammatory rhetoric, and for the time being this is useful for President Mugabe.

BBC: Profile: War Veterans' leader 'Hitler' Hunzvi

Since 90% of our time is spent in email, this is useful integration that makes work easier.

FORBES: Move up http://i.forbesimg.com t Move down