这样可以稳定上下颌,这样骨头就不会收缩使你的脸看起来很老。
It stabilizes the jaw so the bone doesn't shrink and make your face look older.
而通常这样做的最佳的方式是收缩品牌范围并使之具有独到的意义。
And often the best way to do that is by contracting their brands so they stand for something.
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.
One of the first steps in that healing is that fibroblasts like this cell crawl into the space that's created by the wound and they grab a hold of both sides of the wound and contract and try to pull it together.
愈合的第一步是,成纤维细胞向,损伤的创口爬行,紧紧地抓住创口的两侧,通过收缩回拉 试着使创口合拢
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