美加贸易的数字不是简单相加的,比如一辆汽车从原材料到出厂2需要来来回回4/5次过边界

来源: cn_abcd 于 2026-01-14 08:40:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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