clean energy resources的用法和樣例：
例句
- China wants to reduce its dependence on coal but converting to cleaner energies on a mass scale would be prohibitively costly for China, which is still a developing economy.
中國想減少對煤炭的依賴(lài)，但大規模的轉向更潔凈的能源對中國這樣一個(gè)發(fā)展中經(jīng)濟體來(lái)說(shuō)要花很多錢(qián)，這也阻止了中國大規模的轉向更潔凈能源。
