an entirely landlocked large body of salt or fresh water
内陆海。
an almost landlocked arm of the Pacific Ocean, surrounded by the Japanese islands of Honshu, Shikoku, and Kyushu. Its chief port is Hiroshima.
濑户内海(太平洋一海湾,几乎为陆地包围,周围有本州、四国和九州等日本岛屿,主要海港广岛)。