别指望在加拿大办美签了,人家网站上写的很清楚: ' i& U3 l2 T) H: t% v1 b) K- p$ u7 E) m: z
* ]5 K; F8 Y* I& P9 _http://www.consular.canada.usembassy.gov/usa_visa.asp 里的: 9 ^9 {& ]: W- `7 [" M8 j. z6 U! B3 M6 `; L8 i* ^5 U# ], I) G
"Important Notice for Applicants with a Visitor's Permit to Canada 8 ]) d: N/ }2 K4 L9 {0 r0 R$ z6 ~2 U$ z, e
With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."