别指望在加拿大办美签了,人家网站上写的很清楚: ) ~3 y! O9 |3 [3 u / R( _& W6 [9 A9 Y1 o; I! n4 lhttp://www.consular.canada.usembassy.gov/usa_visa.asp 里的: : }( E; E; t) X0 H7 m0 v ) j4 y6 x% [$ H# r"Important Notice for Applicants with a Visitor's Permit to Canada d$ C( x% f7 e$ c2 J: k3 l W% b+ T& [) J; {( _' q' _
With rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."