例句
If we do it ourselves, only cheap energy from hydropower will do.
如果靠自力更生，只有靠水电站带来的廉价能源了。
Developing hydropower more quickly would allow for increasing the renewable energy target above the envisaged government target without increasing the incremental cost of the program.
加快发展水电可以在不增加整个可再生能源开发方案总成本的同时，实现可再生能源发展的新目标。