Stopcocks
n. 管闩( stopcock的复数形式 ); 活塞; 活栓; 旋塞阀
🗣️ 情景例句
That's beautiful!
太完美了，真棒！
For a few, scholarships were sources of support.
有少数人，奖学金是他们接受教育的学费来源。
In a long drop, they reach speeds of 60 miles an hour and more.
在一个长长的跌落过程中，它们可以达到每小时60里甚至更快的速度。