提高水和风的利用效率有助于抽水、碾磨或航行等工作。

Increased efficiency in the use of water and wind helped with such tasks as pumping, milling, or sailing.

youdao

提高水和风的利用效率有助于抽水、碾磨或航行等工作。

Increased efficiency in the use of water and wind helped with such tasks as pumping, milling, or sailing.

youdao