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chum的一般过去时为：chummed...
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chum的现在进行时为：chumming...
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chum的复数形式为：chums...
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an old school chum老校友There's your old chum, Francis Getliffe and his friends.还有你的老朋友法兰西斯?盖特列夫以及他的朋友们.You see I would rather chum with the few mechanics there were in that station.你们看,我倒情愿与那站上的那几个机修工交朋友....
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chum的现在完成时为：chummed...
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You see I would rather chum with the few mechanics there were in that station.你们看,我倒情愿与那站上的那几个机修工交朋友.an old school chum老校友...his old chum Anthony.他的老朋友安东尼There's your old chum, Francis Getliffe and his friends.还有你的老...
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chum的第三人称单数（三单）为：chums...