Mix Class allowed, ticket validity & condition will be based on the lower booking class (except for CHILD - W, H, M, E, B, Y, S class is not allowed to mix with N / Q class).是什么意思_Mix Class allowed, ticket validity & condition will be based on the lower booking class (except for CHILD - W, H, M, E, B, Y, S class is not allowed to mix with N / Q class).在線翻譯_英語_讀音_用法_例句