别指望在加拿大办美签了,人家网站上写的很清楚: ( o0 z: T- y9 N+ }! L
# n6 ^. C% ^1 \" S http://www.consular.canada.usembassy.gov/usa_visa.asp 里的:' f i. i s% x3 S
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"Important Notice for Applicants with a Visitor's Permit to Canada5 m3 Y* H! s- R. M6 |. Z1 B* Q
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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."