/ˈbaʊndri ||; ˈbaυndrɪ/noun
[C] (pluralboundaries) a real or imagined line that marks the limits of sth and divides it from other places or things (真实或想象中的)界限,分界线:
The main road is the boundary between the two districts.这条大路是两区的分界。Scientists continue to push back the boundaries of human knowledge.科学家不断扩展人类知识的界限。☞Look at the note at border. 参看 border 的注释。