别指望在加拿大办美签了,人家网站上写的很清楚: - e' L. c& s5 d5 g 7 v$ ~# F" F$ jhttp://www.consular.canada.usembassy.gov/usa_visa.asp 里的: ' R, v' m8 C+ Y/ F6 P 3 B) ~* M( K% J& m+ t1 {* H9 ^"Important Notice for Applicants with a Visitor's Permit to Canada h7 O' e/ i" y/ P! J( C) P: `6 n 9 a; D* o3 ~/ a# cWith rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."