An unbridgeable gap or divide between two sides in an argument is so great that the two sides seem unlikely ever to agree.
例句
...the apparently unbridgeable gulf between the SIS and the Security Service...秘密情報局和國家安全局之間顯然難以逾越的鴻溝The gap between the President and his opponents is unbridgeable.總統(tǒng)和反對派之間的嫌隙是不可彌合的。
英英詞典釋義
Adjective
1. not bridgeable;
"a wide unbridgeable river""unbridgeable generation gap"