英语语法分析

Other birds flying in the upwash experience reduced drag, and spend less energy propelling themselves.

其他鸟类在上升流中飞行时受到的阻力减小了，它们在推动自身前进时消耗的能量也减少了。

He succeeded in propelling the ball across the line.

他成功地把球带过线。

《牛津词典》

The elongated, serpentine body that allows land snakes to slither through dense grass also serves aquatic snakes in propelling through the water.

这种细长蜿蜒的身体能让陆地上的蛇在茂密的草丛中爬行，也能让水蛇在水中游动。