别指望在加拿大办美签了,人家网站上写的很清楚: , v" O, S0 \2 k+ C: j
& [6 g7 n T$ _# R/ S3 d8 H http://www.consular.canada.usembassy.gov/usa_visa.asp 里的: ; \3 U/ e4 T7 O; ]- X' ~, r' p! _9 d/ |# Z* e5 X
"Important Notice for Applicants with a Visitor's Permit to Canada; [( K: o; Z7 c* v/ A
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With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."