The sun is the primary body in our neighborhood.

太阳是我们的宇宙邻居中的主要天体。

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Collagen is the primary protein in the body.

胶原蛋白是人体的主要蛋白质。

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The head injury was the primary form among the injury parts of the body(27.9%).

头部伤害在发生部位方面占首位（27.9%）；

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The head injury was the primary form among the injury parts of the body(27.9%).

头部伤害在发生部位方面占首位（27.9%）；

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