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。
I had to fight my way through the milling crowd.
我不得不在涌动的人潮中挤出一条路来。
They moved purposefully through the milling crowd.
他们有目的地在乱哄哄的人群里穿行。