stream function

例句：

1. 1. Thestream flows gently through the forest.
   这条小溪在森林中缓缓流淌。
2. 2. Thestream is a popular spot for fishing andpicnicking.
   这条小溪是钓鱼和野餐的热门地点。
3. 3. Thestream was so clear thatwe could see fish swimming init.
   这条小溪如此清澈，我们能看到鱼儿在其中游动。