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- An external boundary; a circuit. 界线；周线
- internal and external boundary line 内外边
- He is just listening in external of that room. 他正在那房间的外面留神听着。
- The lane is the boundary of our land. 那条小路就是我们这片地的界线。
- The ball ran (ie rolled) to the boundary. 球向著边线滚去。
- This news program only covers external events. 这一新闻节目只报道国外消息。
- The boundary is not clearly defined. 这疆界没有明确划定。
- Dynamic focusing effect and response histories of piezoelectric solid cylinders subjected to impact pressures on the external boundary 压电圆柱体在冲击外力作用下动应力与瞬态电势的动态效应和响应历程
- The fence marks the boundary between my land and hers. 这道栅栏是我的地和她的地的分界线。
- She sets great store by external politeness. 她很注重表面的虚礼。
- The shape, outline, or boundary of a coast. 海岸线海岸的形状、轮廓或边界
- The boundary line of a figure, area, or object. 周围一个图形、区域或物体的边界线
- A mark indicating the boundary of such an interval. 刻度线，分度线指示这种间隔的界限的标记
- The ball is caught by a fielder stand just inside the boundary. 那球被正站在边界线内的守场员接住了。
- Our external trade has expanded during recent years. 我国的对外贸易近几年来有所发展。
- The two neighbors disagreed bitterly about their boundary line. 这两个邻居在住房界线问题上剧烈争吵。
- The river is the boundary between the two countries. 这条河是两国的分界线。
- He judge people by mere external clothes rather than internal character. 他判断人只靠着外表的衣服而不是内在的品格。
- The ball was caught by a fielder standing just inside the boundary. 那球被正站在边界线内的守场员接住了。
- The metal or plastic external structure of a motor vehicle. 车身机动车的金属和塑料的外部结构
