英语短语词组词汇be hard at的音标、释义、翻译、用法及例句-英语短语词组词典-老街网

短语	be hard at
释义	be hard at努力从事;努力做：We are in duty bound to be hard at our work no matter what work we are engaged in.无论我们做什么工作，我们都有责任把它努力做好。
随便看	morular morulas morulation Moruloidea morvan morvans morwong morwongs M.O.s mo's mos mos. mosaic mosaically mosaic cleavage mosaic development mosaic disease mosaic diseases mosaic egg mosaic evolution mosaic glass mosaic gold mosaic golds mosaic image mosaic imaging

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