When you move through water you create a 'bow wave' with your head and body, just like a boat does. The shape of the bow wave means the water level drops along the side of the swimmer's face.

当你随着你的头部和身体在水中移动的时候，你会随着产生一股“涡流”，类似小船产生的一样。涡流的形状表示水位沿着游泳者的面部两侧下降。

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When you move through water you create a 'bow wave' with your head and body, just like a boat does. The shape of the bow wave means the water level drops along the side of the swimmer's face.

当你随着你的头部和身体在水中移动的时候，你会随着产生一股“涡流”，类似小船产生的一样。涡流的形状表示水位沿着游泳者的面部两侧下降。

youdao