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

提高水和风的利用效率有助于抽水、碾磨或航行等工作。

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

提高水和风的利用效率有助于抽水、碾磨或航行等工作。

youdao