Pistoning
(piston 的现在分词) n. 活塞, 活塞阀键\\n[医] 活塞(如注射器的)
🗣️ 情景例句
It was on Spring Avenue, near the park.
那房子是在Spring Avenue 公园附近。
I ought to write a letter.
我应该写一封信。
His answer was to lift the vessel out of the water by making it ride on a cushion of air,
他的解决办法是把船体提离水面，让船在一个气垫上行驶，