It is an almost universal truth that the more we are promoted in a job, the less we actually exercise the skills we initially used to perform it.

一个几乎普遍的真理是，工作上提升得越高，我们最初的那些工作技能实际上就用得越少。

《柯林斯英汉双解大词典》

They also perform it for other happy occasions.

他们也会在其他快乐的场合表演。

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Every week they have to learn a different ballroom dance and perform it live on TV on Saturday night.

每周他们都要学习一种不同的交际舞，周六晚上在电视上进行直播。

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Miss Simone wrote that it was expected she would perform to show them what their money had produced.

VOA: special.2009.10.04

So what that means is the compiler is actually going to first "cast" so to speak 13 from whatever it is - to a float -- to a floating point value -- and then perform the division for us.

所以这里的意思是编译器将,做“计算“，譬如13这样一个浮点数,-到另一个浮点数-,然后为我们处理除法。

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It happens in, I think, April and last year we had Snoop Dogg come perform, so that was really cool.

时间就是在四月份。去年，史努普·道格还来我们的音乐会表演，场面非常火爆。

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For an added challenge, perform it while sitting or kneeling on a stability ball, he says.

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To take a simple secret and perform it in a way that looks like magic is extremely difficult.

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The band will first perform it on 16 November, as part of the BBC's Children in Need telethon.

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