What I want to ensure is that another bow wave never builds up again.

我想确保的是这些事情不会再次发生。

By being patient and waiting until my hand enters, I can hide the breath behind the bow wave.

通过耐心的等待手臂入水，我可以把我的换气动作隐藏在波谷里。

Because I wait for the bow wave, only a slight turn of the head is necessary in order to catch the breath.

因为我等待波谷，所以仅是轻微的转头就可以换到气。

A sprinter's greater visibility is also assisted by the bow wave being bigger and the following trough being deeper.

游的快的运动员的可见度也得益于前面更大的涡流和其后的更深的波谷。

You don't have to swim fast to create a bow wave, even swimming slowly creates a decent pocket for you to breathe into.

为了产生涡流，你无需快游，甚至慢慢游泳也能制造一个适合你作呼吸进去的口袋。