一种方式游一段，然后转换另一种方式。

Swim a few lengths one way, then switch to something else.

youdao

这是发生在船上不会长过航游时间的一段恋情。

Here's one shipboard romance that won't last the duration of the cruise.

《柯林斯英汉双解大词典》

它们游泳游得很好，在水里也能生存很长一段时间，但是它们为此消耗了大量的能量。

They can swim reasonably well and survive for long periods in the water, but they pay a high energetic cost for doing so.

youdao