1. Using data collected by scientists over decades, the authors assembled profiles of hundreds of thousands of individuals from almost 2,000 groups.
    作者们用几十年来科学家们收集的数据，汇编成了2,000多个群体中成千上万个个体的数据图。

2. On the exterior, he was cool, calm and collected but on the interior, stress was killing him.
    表面上，他显得沉着、冷静和泰然自若，但他内心深处的压力使他筋疲力尽。

3. That a series of deep soundings was obtained in the Atlantic and the first samples were collected by dredging the bottom.
    才在大西洋测得一个海水深度，同时通过挖掘海底，取得了研究海底的首批样品。