air-free

基本解释

• adj.无空气的；抽了空气的；空的；真空的

同根派生

英汉例句

用作形容词 (adj.)

• It was hitting pockets of compressed air.
  它陷入了压缩空的气潭。
• I was going to call and see when you're free.
  我原来想在你有空的时候去拜访你。
• Vacuum packaging is produced by pumping all the air out of the package.
  真空的包装都是用抽气机把空气抽出的。