Do you have mental or physical trait that you despise?
你有令人生厌的心理或者生理症状?
She was questioned about what physical trait she would change if she could.
她的问题是如果你可以,你打算把自己的身材改变成哪种类型。
The same genes can often control more than one physical trait at a time. For instance, what would happen if the "good eyesight" genes in our example also resulted in purple toes?
较好的视力有利于捕猎,所以它们更有可能生存下来,然后好的视力又通过基因传递给下一代。
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