mainland

/ˈmeɪnˌlænd/

the main land mass of a country or continent; as distinguished from an island or peninsula

中文释义：大陆；本土

The island is separated from the mainland by a narrow strait.

该岛与大陆之间隔着一条狭窄的海峡。

Many species on the island differ from those on the mainland.

岛上的许多物种与大陆上的不同。