短语词组短语spur leveling line [测]支水准路线;支水准路线spur -line [铁路]支线exclusive spur line 铁路专用线spur line of level 支线水平线;支线水准线railroad spur line 铁路专用线Lok Ma Chau Spur Line 落马洲支线 返回 spur line