别指望在加拿大办美签了,人家网站上写的很清楚: * p: a3 K! \5 k2 T' M 0 ?/ O; ? q6 H/ W; j* ]/ Xhttp://www.consular.canada.usembassy.gov/usa_visa.asp 里的: ; r p( G% Q3 b \, O7 i + h8 L! { N/ ]) c- L. y) N8 E# V"Important Notice for Applicants with a Visitor's Permit to Canada7 d* v- j4 v7 |' v9 v! V
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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."