界: 名词1.(相交的地方; 划分的界限) boundary 短语和例子国界 the boundary of a country; national boundary; 山西和陕西以黄河为界。 the boundary between shanxi and shaanxi is the huanghe river.2.(一定的范围) scope; extent 短语和例子外界 e
周界: circumference; perimeter 短语和例子一道篱笆标明了那块田地的周界。 a fence marked the perimeter of the field
