But most experts agree that some research activity is essential to keep the staff and their students in touch with the latest developments in their subjects.

但是，大多数专家认为，为了让教职工和他们的学生了解他们学科的最新发展，这些研究活动是至关重要的。

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Erosion, of course, is one of the key reasons for its destruction, but human activity is also increasingly responsible.

当然，侵蚀是造成其破坏的主要原因之一，但人类活动应承担的责任也越来越大。

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One widely accepted psychological definition of boredom is "the distasteful experience of wanting, but being unable, to engage in satisfying activity."

人们普遍接受的一个关于“无聊”的心理学定义是：“因为渴望但无法参与令人满意的活动而带来的不愉快体验”。

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But one activity that legally is only supposed to be for people age twenty-one and over is drinking alcohol.

VOA: special.2009.08.07

But when you have things like this, which is typical of suburban developments, it affects the physical activity a lot.

但是当出现了这些东西,典型的城郊发展的产物,这给居民的生活造成了很大不便

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This is a way of conceiving his activity as a poet but it's also, as we'll see, a way of conceiving, in fact, culture and human history in general.

这是一种看待他作为诗人,种种活动的方式，实际上也是总的来看待，文化和人类历史的方式。

耶鲁公开课 - 现代诗歌课程节选

But activity has cooled since the First Home Owners Grant expired last year and interest rates began to rise.

FORBES: Australia: Another Land Shortage

But activity in the municipal-bond market ground to a halt Monday, as issuers postponed deals and trading wrapped up early.

WSJ: Idled Stock and Bond Traders Watch, Wait and Position

Normally, traders work for an hour or more after the exchange's closing to process transactions, but activity had stopped dead.

CNN: Still On A Roll?