边界线

• boundary line
• border line
• borderline
• sideline

参考释义

边界线

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例句

1. 那球被正站在边界线内的守场员接住了。
   The ball was caught by a fielder standing just inside the boundary.
2. 周围一个图形、区域或物体的边界线
   The boundary line of a figure, area, or object.