Pneumatics
n. 气体力学\\n[医] 气体力学
🗣️ 情景例句
Well, I might want to go to Columbia.
嗯， 我也许去Columbia大学。
Let me explain my actions.
请听我解释。
A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
敲打船体所发了的声音会从海底传回来，