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                n.流浪者,屁股,狂欢作乐,笨蛋,废物vt.乞讨vi.流浪,闲荡adj.质量低劣的,无价值的,无价值的,残废的,很不愉快的... 
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                bum的音标:bum的英式发音音标为:[bʌm]bum的美式发音音标为:[bʌm]... 
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                bum的复数形式为:bums... 
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                bum的现在完成时为:bummed... 
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                Can I bum a cigarette off you?可以向您要支烟吗?Why don’t you stop behaving like a bum and get this place cleaned up?你不要再像一个懒鬼的样子,赶紧把这地方收拾一下好吗?He looks like a bum who's been drowning his sorrows in sleazy dives.他看起来象个游手好闲之辈,... 
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                Mind if I bum a cigarette?能给我一支烟吗?He knows you're getting a bum deal.他知道你在做一笔烂生意。John lost his job and went on the bum.约翰失业后过着流浪生活.... 
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                bum的现在进行时为:bumming... 
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                bum的一般过去时为:bummed...