| 例句 |
They were forced to retreat back over the frontier.他们被迫退回到边界线以内。The boundary line runs east.这条边界线向东延伸。This line of islands formed the outer limit of the empire.这一系列岛屿形成了该帝国的边界线。Draw a margin down the left-hand side.在左边画一条边界线。A survey of the property showed that the northern boundary was not correct.对这块地产的测量表明，它北面的边界线是不正确的。 |