柯林斯词典biogas /ˈbaɪəʊˌɡæs/ 1. N a gas that is produced by the action of bacteria on organic waste matter: used as a fuel 生化氣躰 返回 biogas剑桥词典a gas containing methane that can be burned as a fuel , produced by dead plants and animals as they decay 沼氣 返回 biogas