vi.停止，中断，逗留，（使）停止工作
vt.塞住，堵塞，阻挠，止付
n.停止，（管风琴的）音栓，停车站，（管风琴的）音管
A regulated opening for discharging a liquid, as in a stopcock.
控制通过入口的液体量的阀.
The sealing property is one of the main indicators of kelly stopcock.
密封性能是方钻杆旋塞阀主要指标之一.
If a water - pipe bursts turn off the stopcock immediately.
水管破裂时要立即关紧旋塞.
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