鱼又慢下来了，正用它惯常的速度游着。

The fish had slowed again and was going at his usual pace.

youdao

为游泳热身，那就开始时慢慢游然后提高速度到你能够达到的水平。

To warm up for swimming, swim slowly at first and then pick up the tempo as you're able to.

youdao

不抬头可以让你速度增快，但是如果你开始转圈游，那就很不好了。

Not looking up may speed you up, but that doesn't do much good if you start swimming in circles.

youdao