boundary
n
1 line that marks a limit; dividing line 界限; 分界线
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.
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.
(fig 比喻) 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. =>Usage at border 用法见border.
2 (in cricket) hit to or over the boundary, scoring 4 or 6 runs (板球)击至或击过边线(可得4分或6分)
He scored 26 runs, all in boundaries. 他得了26分, 都是打边线球获得的.