biogas
🇺🇸
/ˈbaɪəʊɡæs/
🇬🇧
/ˈbaɪəʊɡæs/
A type of gas, mainly methane, that is produced by the breakdown of organic matter, like dead plants, and can be used for heating and cooking.
Farmers use biogas to heat their homes and cook their food.
農民使用沼氣為他們的家供暖並烹飪食物。