1
turn off/open/close the stopcock
常与表示开关的动作动词搭配。
Turn off the stopcock before replacing the pipe.
更换管道前关掉龙头。
旋塞；龙头；阀门
stopcocks — plural of stopcock
先理解核心含义，再看它在真实句子里的用法。
旋塞；龙头；阀门
a valve with a rotating plug used to control the flow of a liquid, such as a tap
Turn off the stopcock before replacing the pipe.
更换管道前关掉龙头。
调节液体或气体通过管道流动的阀门、龙头或水龙头
A valve, tap or faucet which regulates the flow of liquid or gas through a pipe.
Please turn the stopcock before repairing the pipe so no water spills out.
修理管道前，请先转动旋塞，这样就不会有水溢出来。
The gas supply in the lab is controlled by a small stopcock on the wall.
实验室的气体供应由墙上的一只小旋塞控制。
The plumber checked every stopcock in the building before turning on the main water supply.
水管工在打开主水阀之前，检查了大楼里的每一只旋塞。
常与表示开关的动作动词搭配。
Turn off the stopcock before replacing the pipe.
更换管道前关掉龙头。
The stopcock regulates the flow of liquid.
旋阀调节液体流量。
常与地点介词连用。
There is a stopcock on the main water line.
主水管道上有一个龙头。
Not this
You should stopcock the water before repairing.
Use this
You should turn off the stopcock before repairing.
stopcock是名词，不能用作动词。应使用动词短语'turn off' + 名词'stopcock'。
Not this
There are two stopcock in the kitchen.
Use this
There are two stopcocks in the kitchen.
可数名词stopcock的复数形式应加-s。
Choose the next layer that will help you use stopcocks with more confidence.
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.