suction gas

例句：

1. 1.The vacuum cleaner uses suction gas to clean the floor.
   真空吸尘器使用吸引气体来清洁地板。
2. 2. The engine used in this car has a suction gas system for better performance.
   这辆车使用的发动机有一个吸引气体系统，以获得更好的性能。
3. 3.The scientist discovered that suction gas could be used to remove pollutants from the air.
   科学家发现吸引气体可以用来从空气中去除污染物。