mash gas

例句：

1. 1. Thecar's engine is producing mashgas, which is causing the exhaust tosmell like rotten eggs.
   汽车的引擎正在产生马什气体，这导致排气管散发出臭鸡蛋的味道。
2. 2. The scientists arestudying the effects of mash gason the environment.
   科学家们正在研究马什气体对环境的影响。
3. 3. The engineers wereconcerned about the potential health risks associated withmash gas.
   工程师们担心与马什气体相关的潜在的健康风险。