当我们的祖先身体被毛发覆盖时，当人感到沮丧或者寒冷的时候皮肤上的一种叫“立肌”的肌肉会收缩，使他们的毛发竖立起来。
When our ancestors were covered in fur, muscles in their skin called "arrector pili" contracted when they were upset or cold, making their fur stand on end.
应当在净光的山竖立大旗，向群众扬声招手，使他们进入贵胄的门。
Lift ye up a banner upon the high mountain, exalt the voice unto them, shake the hand, that they may go into the gates of the nobles.
幸好，只要了解使头发竖立的科学原理，就有办法让头发服服帖帖。
Fortunately, we can force our hair to stay down by understanding the science that makes it stand up.
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