gas ket

例句：

1. 1. The scientist analyzed the composition of the gas ket in the sample.
   科学家分析了样本中气体的组成。
2. 2. Gas ket is a common component of natural gas.
   天然气中常见的成分是气体。
3. 3. The firefighters used gas ket to extinguish the flames.
   消防员使用气体灭火剂扑灭了火焰。