lungful

noun

1. 一大口（一次吸入的空气、烟等）
   the amount of sth such as air or smoke that is breathed in at one time

1. N-COUNT （新鲜空气、香烟等）深吸的一大口
   If someone takes a lungful of something such as fresh air or smoke, they breathe in deeply so that their lungs feel as if they are full of that thing.
   1. I bobbed to the surface and gasped a lungful of air.
      我浮上水面，深吸了一口气。

1. She gasped for air and drew in a lungful of water
   她喘了口气，吸入了一大口水。
2. I bobbed to the surface and gasped a lungful of air.
   我浮上水面，深吸了一口气。
3. He puffed out his fat cheeks and let out a lungful of steamy breath.
   他鼓起胖乎乎的腮帮子，呼出了一大口热气。
4. At this altitude the atmospheric pressure is half that at sea level, and thus delivers half the amount of oxygen per lungful.
   在这一海拔大气压力只有海平面的一半，因此每呼吸一次身体只能得到一半的氧气供给。