拼音：yī dì er dào dǐ
解释：比喻一辈子在一起，不半路上相抛。多指夫妻相守一直到老。
出处：明·兰陵笑笑生《金瓶梅词话》第五十五回：“我们随著员外，指望一蒂儿到底，谁想酒席中间，一言两语，竟把我們们与別人。”
It's a metaphor for being together all your life and not throwing each other on the way. It mostly refers to husband and wife staying together until they are old.
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