If people cannot sense a reward, she says,then they might have difficulty completing an activity.

VOA: special.2009.09.16

And it's a sentence you wanna use when you wanna describe an activity that

当你想描述一项活动时，你可以使用这个句型。

I feel like 课堂 - SpeakingMax英语口语达人

It's as if "thinking nothing" is not a passive activity, but an active one.

好像“脑子里一片空白“,不是一种被动行为，而是主动的似的。

耶鲁公开课 - 1945年后的美国小说课程节选

Or make major changes in an activity that has already begun.

VOA: special.2009.07.12

I think more maturity can be one of the effects, one of the products of undergoing an endless, a ceaseless activity of Paiddeia, of deep education, because moral maturity comes from courage.

我认为道德成熟是不间断的，深层次的教育活动,的体现和产物，因为道德成熟来源于勇气。

普林斯顿公开课 - 人性课程节选

An activity can cause breakthrough pain.

VOA: special.2009.02.10

To some extent, if we put you in an fMRI scanner and observed what you're doing in real time, by looking at the activity patterns in your brain we can tell whether you are thinking about music or thinking about sex.

某种程度来讲,如果我们对你进行,功能性核磁共振成像扫描,观察你的实时活动,通过观察你的大脑活动模式,我们可以看出你是想到了音乐,还是想到了性

耶鲁公开课 - 心理学导论课程节选

"But unlike a lot of more traditional education, where it is a lecture, everything that we do is experiential, so we put young people into situations where they can actually be engaged in an activity; for example, starting their own mini-student experience those same challenges that we as adults would have when we start a business.

VOA: standard.2009.12.04

These studies must consider wildlife activity up to about three thousand meters above an airport and eight kilometers around it.

VOA: special.2009.04.01

On an average day, nearly everyone fifteen years of age and older took part in a non-work activity like watching television, socializing or exercising.

VOA: special.2011.07.22

Peterson says an early childhood education class got her thinking about ways to incorporate more activity into their school day.

VOA: standard.2010.06.25

"We have 33 company members. We're from different schools but we just meet on Saturdays from 4:30 to 6:30, it's an after school activity,"

VOA: standard.2009.12.04

While the security forces have been praised for these actions, Andi Widjajanto,a military analyst from the University of Indonesia, is concerned that the increased police activity also indicates an increased level of militant activity.

VOA: standard.2010.03.24