The membrane is impermeable to blood cells and large molecules such as proteins, but small ones can get through it.
血液分子和一些大分子例如，蛋白质，是无法渗透隔膜的，而小分子仍然可以通过。
2
This employs high-pressure pumps to force the water from brine through a membrane that is impermeable to salt.
这种方法需要用高压泵使海水通过一种不能渗透盐的薄膜，从而淡化海水。
3
The present invention relates to an impermeable shoe (1), particularly a hiking shoe, comprising a shank (2), a breathable membrane (3) and an inner liner (4).