inflammable air

• 氢气,可燃空气

inflammable air的用法和样例：

例句

1. Hydrogen burns easily in oxygen or in air.
   氢气在氧气或空气中易燃。
2. When you let go a balloon filled with hydrogen it will rise up into the air.
   你一撒手，充满氢气的气球就会升上天空。