本有价卷，在8月1号之前定机票有效。 现每张20欧元转让。波尔多的朋友，可以在定完机票后再付钱。

Travel Discount Certificate
This certificate entitles a passenger to a discount of EUR50 off a published fare for one-way or roundtrip travel solely        on flights of KLM Royal Dutch Airlines, KLM cityhopper,Air France, Northwest Airlink to selected destinations worldwide.