It means that if I have a biological cell, or some container with a membrane through which one of the constituents might pass.
它的意思是如果我有一个生物细胞，或带膜的容器，其中一种组分可以通过这层膜。
It means that if I have a biological cell, or some container with a membrane through which one of the constituents might pass.
它的意思是如果我有一个生物细胞，或带膜的容器，其中一种组分可以通过这层膜。
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