单词	man-hour
释义	man-hour noun ˈman-ˈau̇(-ə)r  : a unit of one hour's work by one person that is used especially as a basis for cost accounting and wages Word History First Known Use 1912, in the meaning defined above
随便看	lethes lethied lethiferous Lethocerus Lethrinus leti Leticia letoes letos letovicite lets lets (someone) know lets down lets fly lets go lets know lets off lets on lets on (about) lets on about lets out lets someone know lets the cat out of the bag lets the cat out of the bag (about) lets the cat out of the bag about

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