别指望在加拿大办美签了,人家网站上写的很清楚: / W" I7 L8 Z9 \( L * r( G+ L7 C3 \, `% S2 F% c) mhttp://www.consular.canada.usembassy.gov/usa_visa.asp 里的:. J# t" L/ G% E4 D5 i
! Q T- O" i* N6 N
"Important Notice for Applicants with a Visitor's Permit to Canada/ ]! X# }0 |: _3 p
( i" O" Y0 ~& C8 B$ j; ?( oWith rare exceptions, visa applicants temporarily visiting Canada should apply at the U.S. Consular Section in their country of residence."