twain
/tweɪn/短语
never the twain shall meet
- used to suggest that two things are too different to exist alongside each other两者永远合不到一块：
families were either 'church' or 'chapel' and never the twain shall meet.
家庭要么是“教堂”, 要么是“小礼拜堂”, 只能为其一, 不能兼而有之。
[ORIGIN: from Rudyard Kipling's 'Oh, East is East, and West is West, and never the twain shall meet'. （Barrack-room Ballads (1892)）.]
词源
Old English twegen, masculine of twā （see TWO）.