piston [ˈpɪstən]以下由轻松背单词网站提供
单词级别第7级基本释义n.活塞英英释义a short solid piece of metal which moves up and down inside a cylinder in an engine to press the fuel into a small space and to send the power produced by it to the wheels参考例句They use a piston engine instead. 他们改用活塞发动机。The piston moves by steam pressure. 活塞在蒸汽压力下运动。 推荐阅读 |