1·That means it's still almost always cheaper to use local freshwater than to desalinate seawater. This price gap, however, is closing.
这就意味着在当地几乎总是可以找到比淡化海水更廉价的淡水，然而，这种价格差距正在消失。
2·Energy and the technology to desalinate water are both expensive, and this means that desalinating water can be pretty costly.
淡化海水所需的能源和技术价格不菲，这就意味着海水淡化的代价极其昂贵。
3·So a nanotube membrane that allows both sodium and chloride ions (which are negatively charged) to flow out of seawater could become a cheaper way to desalinate water.
因此，这种纳米管膜，可以同时使钠离子和氯离子(这是带负电荷)从海水里分离，从而成为一个淡化海水的便宜方式。
4·Nuclear reactors can be used to generate electricity – but they can also be used to desalinate water.
核反应堆能用于发电——它们也能用于淡化海水。
5·Course content will desalinate inherent concept, carry out modular teaching.
课程内容要淡化固有理念，实行模块化教学。