人们反应最快的特性是他们与其伴侣共有的。
People responded the quickest to traits that were true of both them and their partner.
眼肌是整个身体肌肉中反应最快的肌肉，反应速度超过每秒100次。
The eye muscle is the fastest reacting muscle of the whole body. It contracts in less than 1/100th of a second.
运用一个小组竞赛来复习已经学过的数字，反应最快的小组给予加分。
First, let's have a race to review the numbers . I will give you some points if you are fast.
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