柯林斯詞典undersea /??nd??si?/ 1. ADJ Undersea things or activities exist or happen below the surface of the sea. 海下的[ADJ n] ...an undersea pipeline running to Europe. ...通向歐洲的海底管道。 返回 undersea劍橋詞典below the surface of the sea 海面下的，海底的 undersea exploration 海底探測 返回 undersea