别指望在加拿大办美签了,人家网站上写的很清楚: + [) O! _0 W) d, B' A3 M# P
% p Z; s G) B5 O$ |: O% A http://www.consular.canada.usembassy.gov/usa_visa.asp 里的: 9 g$ L, L1 e" A& x" b . _7 S0 K+ p6 |& R0 {" D"Important Notice for Applicants with a Visitor's Permit to Canada & \$ A' t) @" O# t4 k9 |, I4 k' G4 \) t* b! W: B0 A
With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."