Instead of passing water molecules, these membranes pass ions.

跟让水份子通过不同的是，这些过滤膜让离子通过。

youdao

I pass the bottled water - with stainless steel water bottles for each member of my family, I wouldn't think of wasting money on bottled water.

我越过瓶装水——每个家庭成员一个不锈钢水杯，我不用浪费钱在瓶装水上了。

youdao

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。

youdao

These holes let water slowly pass through the walls of the filter.

VOA: special.2009.06.22

Slowly rotating on water-powered, aluminum A-frames, the vegetables pass through a trough of water every eight hours.

CNN: Urban farming looking up in Singapore

That limits the amount of caffeine that can pass into the water.

ECONOMIST: Espresso coffee

At one point in the video, a tractor and trailer pass in the opposite direction, causing a wave of water to surge over the Land Rover's bonnet.

BBC: Welney Land Rover flood driver was 'irresponsible'