to pass water

The membrane’s protein channels, each just a few nanometers across, allow a stream of water molecules—and only water molecules—to pass single file at a rate of one billion per second.

这种膜上的蛋白通道，直径只有几个纳米，可以（也只可以）让水分子通过，其通道每秒可过滤10亿个水分子。

Through those tubes, rescue workers could pass food, water, medicine, telephone lines, letters between miners and family members, and games to help pass the time.

通过这两条管道，营救人员能输送食物、水、药品，铺设电话线，传递矿工与家人的信件，还有用来打发时间的游戏。

This is the tendency for water to pass through a membrane separating a weak solution from a strong one.

渗透是一种水通过膜的运动趋势，膜的两面分别是浓溶液和稀溶液。