"He threatens with unilateral steps," "Do you think that settlement activity is bilateral?

VOA: standard.2009.11.16

It's kind of like religion by definition is a communal activity and so as what you're trying to do is a lot of... building skills among groups.

可能宗教本身,就是种集体性的活动，你们所做的,也就是培养集体生活的技能。

普林斯顿公开课 - 人性课程节选

so it can do the activity or sports that you like to do.

这样身体就能做你喜欢的活动或者运动。

健康生活 - SpeakingMax英语口语达人

"When we plotted the circuits in the brain against their childhood lead blood lead levels, we found that those with a higher blood lead measurement had less activity in the part of the brain normally left to do the attention tasks,"

VOA: standard.2009.12.19

Walking is something you can do with others, in the sense that it can be a joint activity,a joint undertaking.

走路是一件你能和他人一起做的事，这是一个共同合作的行为和事件。

耶鲁公开课 - 死亡课程节选

"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

In fact though, the children who you reward later on think that this activity has less value and they are less likely to do it when there's no reward present.

但事实上，拿到奖励的孩子会想,这个活动的价值变低了，如果没有奖励,他们就不太可能会再做。

耶鲁公开课 - 心理学导论课程节选

most people tend to over-train for whatever activity they're trying to do.

大部分人不管试着做什么都会过度练习。

健康生活 - SpeakingMax英语口语达人

I can't think of any activity I'd want to do forever.

我想不出一样希望永远从事的活动。

耶鲁公开课 - 死亡课程节选