Ever since the human-genome project was completed, it has puzzled biologists that animals, be they worms, flies or people, all seem to have about the same number of genes for proteins-around 20, 000.

自从人类基因组计划完成后，令生物学家迷惑不解的是：动物(线虫、苍蝇和人类)好像都有相同数目的组成蛋白质的基因——大概20,000个。

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To be honest, sometimes I feel puzzled about my future career.

老实说，有时候我对我以后的职业生涯感到困惑。

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By now she realized that it could not be an invitation, but was puzzled about why they asked it.

到现在，她才意识到那不是一个邀请，但是困扰她的是：为什么他们会那样问呢？

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"This doesn't provide any explanation of a mechanism for the connection between the ENSO cycles and conflicts, and I'm quite puzzled about what it could be, " he told me.

BBC: Warm, wet - and warring?