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Siphon =虹吸
noun
a tube used to convey liquid upwards from a reservoir and then down to a lower level of its own accord. Once the liquid has been forced into the tube, typically by suction or immersion, flow continues unaided.
verb
draw off or convey (liquid) by means of a siphon.
"a gravel cleaner that removes detritus without siphoning off water"
