n. 密友; 鱼饵; 室友
vi. 成为好朋友; 用鱼饵钓鱼
late 17th cent. (originally Oxford University slang, denoting a room-mate): probably short for chamber-fellow. Compare with comrade and crony
mid 19th cent.: of unknown origin
early 20th cent.: from Chinook Jargon tzum (samun), literally 'spotted (salmon')
...his old chum Anthony.
他的老朋友安东尼
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