theboundaryofacountry;nationalboundary;國界
TheboundarybetweenShanxiandShaanxiistheHuangheRiver.山西和陜西以黃河為界。
externalworld;外界
fieldofvision眼界
allsectionsofthepeople;peopleofallwalksoflife;各界人士
world[circles]ofliteratureandart;文藝界
theanimal[vegetable,mineral]kingdom動[植,礦]物界
thePaleozoicgroup古生界
upper[lower]bound上[下]界