Acoustic-gravity wave in the ionosphere的用法和样例：
- The most easily observed example of such gravity waves is that of waves in the lee of mountains.
- Her disheveled coat was waving in the wind.
- The red flags are waving in the breeze.
- The flags were waving in the wind.
- On the smooth wave in trembling beauty sleep.
- Saturation mechanism of gravity waves in mesosphere is discussed by simulating the nonlinear upward propagation of gravity wave in mesosphere.