| 释义 |
bound·a·ry /`bandərɪ; ˈbaʊndəri/
n [C]
1 the line that marks the edge of a surface, space, or area of land 分界线，边界:
+ between The Mississippi forms a natural boundary between Tennessee and Arkansas. 密西西比河成了田纳西州和阿肯色州的天然分界线。
→ compare 比较 BORDER¹
2 the highest limit that something can reach 界限，限度:
+ of the boundaries of human knowledge 人类知识的极限
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