(of a road, an area, etc.道路、地区等) impossible to travel on or through, especially because it is in bad condition or it has been blocked by something不能通行的（尤指因路况恶劣或被阻断）- The mountain roads are totally impassable to cars in winter.山区道路在冬天完全无法通行。
- After the storm, many roads were made impassable by fallen trees.暴风雨后，倒下的树木使许多道路无法通行。
- The river formed an impassable barrier for migrating animals.这条河是动物迁徙的不可逾越的障碍。
- The river’s broad mudflats were thought completely impassable.人们曾经以为这条河的泥滩部份太宽，根本无法通行。
opposite passableTopics Transport by car or lorryc2Oxford Collocations DictionaryverbsadverbSee full entry Word Originmid 16th cent.: perhaps via French.