短文:盐与新陈代谢
来源:沪江听写酷
2011-03-10 18:11
盐与新陈代谢
Salt and Metabolism
Just how salt became so crucial to our metabolism is a mystery; one appealing theory traces our dependence on it to the chemist ry of the late Cambrian seas. It was there, a half billion years ago, that tiny metazoan organisms first evolved systems for se…