aerial root的用法和樣例：
例句
- From their branches hang aerial roots, which reach to the ground and eventually create new tree trunks.
它們的樹(shù)枝垂下掛的氣生根須一直延伸到地面，最后又逐漸地生出新的樹(shù)干。 - It may be composed of thin-walled colorless cells and functions as water-storing tissue as in certain succulent leaves and the aerial roots of epiphytes.
其功能是保持水分，例如在某些肉質(zhì)植物的葉中和一些附生植物的氣生根中。
