龙骨，小鳍和盔甲帮助引导水流流过身体表面，他们用这种方式来降低水的阻力（看图示）。

The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).

youdao

龙骨，小鳍和盔甲帮助引导水流流过身体表面，他们用这种方式来降低水的阻力（看图示）。

The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).

youdao