It was a period of intense activity.

那是活动激烈的时期。

《牛津词典》

Business is a competitive activity. It is very fierce and very unforgiving.

商业是一种竞争性强的活动：很残酷，也不允许任何错误。

《柯林斯英汉双解大词典》

They are busy preparing for a hectic day's activity on Saturday.

他们正忙着为星期六这一天热闹的活动做准备。

《柯林斯英汉双解大词典》

Gerald Meehl says a better understanding of solar activity and its influence on weather may help researchers predict long-term weather conditions.

VOA: special.2009.09.29

As a model of economic activity or as a kind of vocation guide, this parable couldn't be more opposed -- or to some wouldn't seem more opposed - to the parable of the unprofitable servant.

作为一种经济活动,或者职业引导的典型,这则寓言于那个没获利的仆人的,寓言截然相反。

耶鲁公开课 - 弥尔顿课程节选

And so you can imagine that even in its— with all of this activity on your skin, even at its most--least serious level, it's a terrible disease.

你可以想象这些,即使在,伴随着皮肤上的任何运动,即使是最轻微的活动,也会带来严重的问题

耶鲁公开课 - 生物医学工程探索课程节选

One such concerns mine-sweeping, a non-combat activity that Japan might be expected to undertake for American troops making a landing on, say, a Korean peninsula at war.

ECONOMIST: Can Japan be Asia��s policeman?

First, the Export-Import Bank is a money-making activity for the U.S. government.

CENTERFORSECURITYPOLICY: Fund But Verify the Export-Import Bank

Bim got involved in running Playhouse, a pre-school started by her sister in Delhi, but that was always a part-time activity which she gave up only last year.

FORBES: The Informal Ambassador