One simple and (at least, in the movies) popular test to determine whether a diamond is real is to run it across a piece of glass.

确定钻石是真是假的一个简单而（至少在电影里）流行的测试是让它在一片玻璃上滚。

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For example, one piece of code that runs in 10 seconds can optimized rather easily to run in less than a second.

例如，一段运行时间为10秒的代码很容易优化为在1秒内运行。

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Kiss your partner and nibble one half of the piece of fruit while they nibble the other until it breaks in half, allowing the juice to run into your mouths.

吻你的伴侣，轻轻咬住这水果的一半，而对方咬住另一半，直到它断为两半。吻的时候让果汁流进你们的口中。

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The Wednesday opinion piece in the Chinese state-run newspaper, the People's Daily, is one of a series of attacks against the U.S. tech giant by Chinese media since a closely watched consumer affairs show aired on the Chinese state broadcaster CCTV on March 15.

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