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	rhachio- rhachises rhachitome Rhachitomi rhachitomous Rhacomitrium Rhacophorus rhadamanthine Rhadamanthus rhadamnathi rhadamnathuses rhadamnathusses Rhaetia rhaetian Rhaetian Alps rhaetians Rhaetic Rhaeto-Romance rhaeto-romanic Rhagae rhagiocrine cell rhagionid Rhagionidae Rhagodia rhagoletes

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