单词	tie-down
释义	tie-down noun ˈtī-ˌdau̇n  : a fitting or a system of lines and fittings used to secure something (such as an aircraft or cargo) Word History First Known Use circa 1942, in the meaning defined above
随便看	pergola pergolas Pergolesi pergunnah pergunnahs perhalide perhalogen perhaps perhapser perhapses perhapsest perhydr- perhydro- perhydrogenate perhydrogenation perhydrogenize peri peri acid peri-urban periacinal periacinous periacti periactins periactus periagua

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