stream swirl

例句：

1. 1. The stream flowsgently through the forest.
   这条小溪在森林中缓缓流过。
2. 2. Thestream is crystal clear andvery refreshing.
   这条小溪清澈见底，非常凉爽。
3. 3. The streamwas so deep that it was hard tosee what was beneath the surface.
   这条小溪很深，以至于很难看到水面下是什么。