单词	alackaday
释义	alackaday interjection alack·​a·​day ə-ˈla-kə-ˌdā variants or less commonly alack the day archaic —used to express sorrow or deprecation Word History First Known Use 1658, in the meaning defined above
随便看	propellers propelling propelling pencil propellor propellors propelment propels propenales propenals propend propended propendent propending propends propenes propenoates propenoic acid propenols propenonitriles propense propension propensities propensity proper proper adjective

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