four-stroke internal combustion engine

基本解釋

The operating principle of internal-combustion engine mode is similar to the four-stroke internal combustion engine, so it will inevitably produce harmful emissions.
內燃機模式的工作原理與普通四沖程內燃機相同，因此不可避免的也會產生有害排放物。
Otto built the practical four-stroke internal combustion engine called the "Otto Cycle Engine, " and as soon as he had completed his engine, he built it into a motorcycle.
奧托制造了第一臺實用的四沖程內燃機，叫做“奧托循環(huán)發(fā)動機”，并且當完成制造他的發(fā)動機后他就把發(fā)動機安裝在摩托車上。