air vent

• n. 气孔

例句

用作名词 (n.)

1. Oxygen and carbon dioxide from the air enter through the stoma.
   氧和二氧化碳从空气中进入气孔。
2. When the button is depressed the vent is closed and the output signal increases.
   当掀下按钮时，排气孔通道被阻断，输出信号增大。