The sea cucumber has a type of collagen in its skin capable of excreting or absorbing more water effectively changing from a liquid to a solid.
海参的肌肤内有一种胶原质，能有效排出或者吸收更多水，在液态和固态之间转换。
The sea cucumber has a type of collagen in its skin capable of excreting or absorbing more water effectively changing from a liquid to a solid.
海参的肌肤内有一种胶原质，能有效排出或者吸收更多水，在液态和固态之间转换。
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