别指望在加拿大办美签了,人家网站上写的很清楚: % a3 p$ W @0 ^& q, U2 W" y2 d9 C" k! w5 f; y. J7 Q$ ^6 T5 g http://www.consular.canada.usembassy.gov/usa_visa.asp 里的:7 y% i* X( p( ?/ J5 d4 j$ z
$ Q% z( e R& B- z
"Important Notice for Applicants with a Visitor's Permit to Canada / K7 B' m# U/ D* H4 @$ R y; Y2 m/ K0 y y4 H& Y( a
With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."