a subsonic aeroplane的用法和样例：
- This is, of course, the reason why a sonic boom hits us with all its fury from a supersonic aircraft but not from a subsonic one.
- The shadowgraph and a single pulsed fuel injection system were used to study diesel transversely injected into a subsonic and supersonic flow.
- There is a vein of melancholy in his character.
- There was a long lag in forwarding mail to us.
- A bowl of hot chicken soup is good for you.