going across a continentthe transcontinental railroada six-hour transcontinental flight
the transcontinental railroad
a six-hour transcontinental flight
continental, intercontinentalforeign, multinational, transnational
domestic, internal, international, national
in 1853
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。