boundaries

1. [C]分界线 the dividing line
2. [C]界限,范围 the outer limit of anything

• advance the -ries of knowledge扩大知识面
• break down the boundary between trades打破行业界线
• define -ries确定边界
• exceed the -ries越出界限
• fix a boundary确定边界
• form the boundary构成边界线
• mark the boundary标明边界线
• redraw the boundary重新划定边界线
• set a boundary确定边界

• common boundary共同的边界线
• international boundary国界线
• natural boundary天然的边界线
• new boundary新界线
• overlapping -ries重叠的国境线

• boundary dispute边界纠纷
• boundary light机场界线灯
• boundary stone界石,界碑

• beyond the boundary of超越…的范围
• within the boundary of在…范围内

• boundary between…之间的分界线
• boundary of sb's property某人地产的界线

national boundaries国界；国家边界

1. We crossed the state boundary at midnight.
   我们在午夜穿过了州界。
2. They marked the boundaries of the football fields.
   他们画出了足球场地的边界。
3. Scientists continue to push back the boundaries of knowledge.
   科学家不断地把知识领域的边缘向外扩展。
4. The lane is the boundary of our land from theirs.
   那条小路就是我们这片地与他们那片地的分界线。
5. 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。