| 单词 | sounding machine | 
| 释义 | sounding machine [`sau̇nd·iŋ mǝ´shēn]  ENGINEERING An instrument for measuring the depth of water, consisting essentially of a reel of wire; to one end of this wire there is attached a weight which carries a device for measuring and recording the depth; a crank or motor reels in the wire.  | 
	
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