n. the line or plane indicating the limit or extent of something
n. a line determining the limits of an area
词态变化
复数形式:boundaries
常见例句
1
v lie adjacent to another or share a boundary
2
The butting or boundary of land, particularly at the end; a headland.
3
having a common boundary or edge
4
v lie adjacent to another or share a boundary v be in direct physical contact with
5
a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography) n
