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		plum·met AHD[plŭmʹĭt] D.J.[ˈplʌmɪt]K.K.[ˈplʌmɪt]n.(名词)- A plumb bob.铅锤
 
 - Something that weighs down or oppresses; a burden.压抑物,压迫感:压下来或压迫的事物;负担
 
  v.intr.(不及物动词)plum.met.ed, plum.met.ing, plum.mets - To fall straight down; plunge.垂直落下:垂直落下来;一头扎下
 
 - To decline suddenly and steeply:骤降,爆跌:突然和大幅度地降低:Stock prices plummeted.股票价格暴跌
 
 
 - Middle English plomet 中古英语 plomet 
 
 - from Old French [ball of lead] [diminutive of] plom, plomb [sounding lead] 源自 古法语 [铅球]   plom, plomb的小后缀 [测深铅锤] 
 
 - from Latin plumbum 源自 拉丁语 plumbum 
 
 
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