我猜想，NAFTA里面会有这些方面的讨论，但是才疏学浅，没有找到，真笨啊。

来源: happycow222 于 2016-04-30 14:22:26 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.