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...秘密情报局和国家安全局之间显然难以逾越的鸿沟The gap between the President and his opponents is unbridgeable.总统和反对派之间的嫌隙是不可弥合的。
英英词典释义
Adjective
1. not bridgeable;
"a wide unbridgeable river""unbridgeable generation gap"