The ships would tow hydropower generators consisting of two wing-like underwater blades that would be made to oscillate by the force of the water as they plough through it.

帆船拖动由水下翼状式叶片组成的二个水力发电机，叶片摆动是借助水流过的冲力。

youdao

Sea butterfly: a swimming predatory Marine sea snail. They have two wing-like outgrowths (lower right) derived from their foot, which they continually flap to swim through the water.

海蝴蝶：一只正在游动的食肉性海蜗牛。它们拥有像翅膀一样的由足进化而来的侧翼(位于右下方)，并靠拍打侧翼在水中前行。

youdao

If I have a pair of wing, I must turn the biggest birds, lets the wing derive the massive water, irrigates the crops for farmer uncle, for grass creation life.

假如我有一对翅膀，我要变成最大的鸟类，让翅膀汲取大量的水，为农民伯伯灌溉庄稼，为小草创造生命。

youdao

Once again, they seemed to prefer to kick rather than run with the ball, while Ugo Monye, playing out of position at full-back, looked like a fish out of water until switched to the wing.

BBC: England 16-9 Argentina

As the craft moves forward, the flow of water over the curved side pulls the wing downward.

FORBES: Cruising Altitude: Minus 400 Feet

Powered by solar energy with access to well water, the home has a separate guest wing, four fireplaces, a three-car garage and pool with spa.

FORBES: Celeb Couple Emily Blunt and John Krasinski Go Green With Ojai Home Purchase