commelinin

例句：

1. 1.The brook flows gently through the forest.
   这条小溪在森林中缓缓流过。
2. 2. The stream is a popular spot for swimming and fishing.
   这条小溪是游泳和钓鱼的热门地点。
3. 3. Her voice was so soft that it could hardly be heard over the sound of the brook.
   她的声音很轻柔，几乎听不见小溪的声音。