以上就是我的英雄们．我的一小串密友的名单。

So, there they are, a short list of the people closest to me.

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人们很难将一小串胚泡(blastocyst)细胞看作是一个人。

IT IS hard for some people to see the small cluster of cells known as a blastocyst as a human being.

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操作符，例如+，是一个字符(或者有时候是一小串字符)指明了运算种类。

An operator, such as the + sign, is a character (or sometimes a short sequence of characters) that indicates a computational operation. In an expression, a term must be one of the following.

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