丙烷

例句：

1. 1.The petrol station is located inthe center of the city.
   加油站位于市中心。
2. 2.The propane tank needs to be filledbefore we start cooking.
   在我们开始烹饪之前，需要给丙烷罐加满气。
3. 3. The butane torch is easy touse and provides good lighting.
   丁烷火炬易于使用，提供良好的照明。