A blast of hot air hit us as we stepped off the plane.
我们下飞机时，一股热浪向我们袭来。
《牛津词典》
2
The inventor Henry Bessemer discovered that directing a blast of air at melted iron in a furnace would burn out the impurities that made the iron brittle.
发明家亨利·贝塞默发现，在熔炉里对铁水直接吹一吹气，就会烧掉使铁变脆的杂质。
3
About 40 seconds after the explosion the airblast reached me.