n.边界，界限，分界线，使球越过边界线的击球(得加分)

原形：boundary复数：boundaries

The boundary around the round ground separates us from the surroundings.
围绕着圆形场地的边界将我们同四周隔开.
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。
Every interest has its own boundary and limitation.
任何利益都有自己的边界和限度。
He came up to the boundary fence, and stood to regain breath.
他来到了隔篱旁，站在那里喘着气。
The boundary between countries is clearly marked on the map.
国界在地图上清晰地标记出来。
She stepped cautiously on the boundary line, unsure if she was allowed to cross.
她小心翼翼地踏上了边界线，不确定是否可以越过。
The boundary conditions for this physics problem are essential for accurate predictions.
这个物理问题的边界条件对精确预测至关重要。
The two teams met at the boundary of their schoolyard for a friendly soccer match.
两队在校园边界相遇，进行了一场友谊赛。
A boundary layer forms on the surface of a liquid when it comes into contact with air.
液体与空气接触时，会在表面形成边界层。
The psychologist helped her client establish healthy boundaries in their relationships.
心理咨询师帮助客户在人际关系中设定健康的界限。
The boundary of the forest reserve is protected by a tall fence to prevent poaching.
森林保护区的边界由高围栏保护，以防偷猎。
The boundary between art and science can often be blurry, but there are definite areas where they converge.
艺术和科学之间的界限常常模糊不清，但确实存在它们交汇的地方。
The company's new policy established clear boundaries regarding acceptable behavior at work.
公司的新政策明确规定了工作中的行为规范。
In computer programming, arrays often have a well-defined boundary beyond which you cannot access elements.
在编程中，数组通常有一个明确的边界，超出这个范围就无法访问元素。