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
This will be a perfect jacket for the wintertime
这一件夹克就很受用
Well, goodbye. See you soon.
那么，再见。后会有期。
certainly it is more difficult than the arts which involve appreciation of flat forms,
欣赏雕塑品当然比欣赏平面的艺术品要难。