gliding model

例句：

1. 1.The bird glides over the water gracefully.
   这只鸟优雅地滑过水面。
2. 2.The airplane is gliding high above the city.
   飞机正高高地飞过这座城市。
3. 3. The glider made a smooth descent into the valley.
   滑翔机平稳地降落在山谷中。