dimethylmethane

例句：

1. 1.This gas is commonly used in refrigeration systems.
   这种气体常用于制冷系统。
2. 2. The chemical was found to have a significant impact on the environment.
   这种化学物质被发现对环境有显著影响。
3. 3. The production of this compound is crucial for the industry's sustainability.
   这种化合物的生产对于行业的可持续性至关重要。