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1. Oxford Dictionary

   boundary

   • IPA[ˈbaʊnd(ə)ri]

   英式

   • n.
     a line which marks the limits of an area; a dividing line；a limit of something abstract, especially a subject or sphere of activity

   • noun: boundary, plural noun: boundaries

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. a line which marks the limits of an area; a dividing line a county boundary the river marks the boundary between the two regions 同義詞 border, frontier, borderline, partition, dividing line, ... 更多bounding line, bounds, confines, limits, outer limits, extremities, margins, edges, fringes, border, periphery, perimeter, circumference, rim, circuit, literarymarge, bourn, skirt
   • ▪ a limit of something abstract, especially a subject or sphere of activity a community without class or political boundaries 同義詞 dividing line, divide, division, borderline, demarcation line, ... 更多line of demarcation, cut-off point, threshold, limits, parameters, bounds, outer limits, confines, extremities, barriers, thresholds, ambit, compass
   • 2. a hit crossing the limits of the field, scoring four or six runs.

   boundary rider

   • n.
     a person employed to maintain the outer fences of a cattle or sheep station.

   Oxford Dictionary

   Boundary Waters

   • ph.
     a region in northeast Minnesota, along the Ontario border, known as a canoeing wilderness.

   Oxford American Dictionary

   boundary umpire

   • n.
     an umpire on the boundary line who signals when the ball is out and throws it back in to ...

   Oxford Dictionary

   boundary value

   • n.
     a value specified by a boundary condition.

   Oxford Dictionary

   boundary condition

   • n.
     a condition that is required to be satisfied at all or part of the boundary of a region in ...

   Oxford American Dictionary

   boundary layer

   • n.
     a layer of more or less stationary fluid (such as water or air) immediately surrounding an ...

   Oxford American Dictionary

   boundary condition

   • n.
     a condition that is required to be satisfied at all or part of the boundary of a region in ...

   Oxford Dictionary

   boundary layer

   • n.
     a layer of more or less stationary fluid (such as water or air) immediately surrounding an ...

   Oxford Dictionary

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3. • 更多解釋

   boundary

   • IPA[ˈbound(ə)rē]

   美式

   • n.
     a line that marks the limits of an area; a dividing line: the eastern boundary of the wilderness the boundary between the US and Canada

   Oxford American Dictionary