free reeds

例句：

1. 1. The river flows over the free reeds.
   河水流过芦苇。
2. 2. The reeds are a natural habitat for many birds and animals.
   芦苇是许多鸟类和动物的自然栖息地。
3. 3. The reeds were used to make boats in ancient times.
   古代人们用芦苇制作船只。