semi-permeable membrane的用法和樣例：
例句
- Desalination is carried out by simply lowering into the ocean a long, hollow pipe capped at the lower end by a semipermeable membrane.
用一根長空心尼龍管插入海水裡，並用半透膜封住較低的一端來進行海水淡化。 - The solvent, in this case water, is passed through the membrane while the impurities are collected at the membrane's surface.
這樣，便使水通過半透膜，而雜質則聚集在膜的表面上。
