加拿大人少，美加边境又太长，北美防空实际上把边境推到左右和北极，美国人实际上也没吃亏，对双方有利

来源: flypacific 于 2022-09-14 16:37:49 [旧帖] [给我悄悄话] 本文已被阅读：次

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