ingress of air

• 接触空气

ingress of air的用法和样例：

例句

1. The relic, when exposed to air, turned to dust.
   这件文物，接触空气之后，变成了粉末。
2. A solid fuel , like coal or wood, can only burn at the surface, where it comes into contact with the air.
   固体燃料，如煤和木材，只能在表面燃烧，因为表面接触空气。