点击下方单词,选择对的这个单词
1. 活塞;活栓;旋塞阀A stopcock is a tap on a pipe, which you turn in order to allow something to pass through the pipe or to stop it from passing through.
1. faucet consisting of a rotating device for regulating flow of a liquid
Synonym: cockturncock
多通过句子记忆单词，而不是单独死记硬背。
