柯林斯詞典internal combustion engine (internal combustion engines) 1. N-COUNT An internal combustion engine is an engine that creates its energy by burning fuel inside itself. Most cars have internal combustion engines. 內(nèi)燃機 返回 internal combustion engine劍橋詞典an engine that produces energy by burning fuel within itself 內(nèi)燃機 返回 internal combustion engine