别指望在加拿大办美签了,人家网站上写的很清楚: : ^, s0 a5 r/ Z# C' D# k) t+ _
) o. `5 j( X2 ^' C$ _) O1 Y; w http://www.consular.canada.usembassy.gov/usa_visa.asp 里的:* {" N7 `* Z) j, E
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"Important Notice for Applicants with a Visitor's Permit to Canada8 j, }( D4 v4 r5 w) H6 ~
& v6 U5 [0 n5 Q# V, K% GWith rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."