inland

内海

A large body of saltwater that is entirely or almost entirely enclosed by land.

内陸の湖

A lake situated in the interior of a country, not directly connected to the sea.

海岸から離れた場所にある湖。

内陸航行

Transport or travel by boat on rivers and canals within a country.

国内郵便

Mail service that operates within the borders of a single country.

一国の国境内でのみ運営される郵便サービス。