A border is a strip or band around the edge of something.
饰边 • ...pillowcases trimmed with a hand-crocheted border. …镶有一道手工钩制花边的枕套。
A country that borders another country, a sea, or a river is next to it.
与…接壤 • ...the European and Arab countries bordering the Mediterranean. …地中海沿岸的欧洲国家和阿拉伯国家。
the Italian border / frontier