air flow

名词 air flow:

1. the flow of air
   同义词：airflow, flow of air

1. As the air craft moves forward, the air flowing over the wings produces lift to raise the aircraft off the ground, and keep it in the air.
   当飞机向前移动时，机翼上方的气流产生向上的力使飞机飞离地面保持在空中不坠。