One single strand can support a weight of up to 100 grams.
一根毛发最多可以承受100克的重量。
The single worst thing you can do from a safety point of view is have a sunken tub, where all of your weight goes on to the foot in the tub.
单从最糟糕的角度看，安全的做法是，保证在一个浴缸内，你的体重都能集中到脚部。
"Handedness has a genetic basis, but like other complex traits - height, weight - it is complex," he said. "it's not a single gene that leads to it."There's a strong environmental component, too.
“偏手性有基因基础，但是同人的其他特征——如身高、体重——一样，十分复杂，”他说，“单独一个基因并不能导致它，环境因素在其中也有很大作用。”
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