theboundaryofacountry;nationalboundary;国界
TheboundarybetweenShanxiandShaanxiistheHuangheRiver.山西和陕西以黄河为界。
externalworld;外界
fieldofvision眼界
allsectionsofthepeople;peopleofallwalksoflife;各界人士
world[circles]ofliteratureandart;文艺界
theanimal[vegetable,mineral]kingdom动[植,矿]物界
thePaleozoicgroup古生界
upper[lower]bound上[下]界
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