The boy played a clever trick on me.

这个男孩给我开了一个很妙的玩笑。

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It may be a clever trick, but it's not at all natural and can cause problems.

这是一个很清楚的小骗术，一点都不自然，当然会引起问题。

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Purifying it involved a clever trick using enzymes that can identify and destroy the genetic material of micro-organisms without also destroying too much of the DNA of interest.

有一个巧妙的方法来纯化dna，用一种酶能够辨别和摧毁微生物有机体的遗传物质而不会销毁太多相关的DNA。

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Google famously got its start from a single clever mathematical trick used to evaluate the importance of Web pages.

FORBES: Magic Formula Stocks

As a nine-year old it was obvious to me that there must be some very clever trick to making huge sums speculating in the markets.

FORBES: Mark Twain, Market Maxims And Making Money