For milder depressions, certain forms of psychotherapy do work well.

对于比较轻微的抑郁症，某些形式的心理疗法确实很有效。

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But sometimes certain species of birds do the exact opposite.

但有时，某些种类的鸟类却会做出相反的举动。

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"One of the programming problems was try to figure out how to break an arbitrary chocolate bar into a certain number of pieces of a certain number of sizes and to do it as quickly as possible.

VOA: special.2010.03.11

And so probably does each animal feel about the particular things it tends to do in the presence of certain objects.

所以，可能每种动物,倾向于做特定的事情,在某物面前。

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A person is a body that has a certain set of abilities, can do a certain array of activities.

人是拥有一套特定能力的肉体,可以从事一系列特定的活动

耶鲁公开课 - 死亡课程节选

Juxtapose, for instance, why folks who are much more willing, for instance, to have, say, European immigrants - particularly of Irish descent -to do certain kind of dangerous jobs.

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He added that hospitals can also arrange their year so that they have the right type of staff available to cater to the particular operations they do at certain types of year.

BBC: Health initiatives change the face of the NHS

The shifting northerly winds can suddenly bring ice and snow to the city, even in springtime, and when they do a certain kind of silence sets in.

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