bathyal半深海(底)的學術名詞半深海的:海洋地質學、地質學深海:生命科學深海區:海洋科學深海底:海洋科學半深海的{地質}:海洋科學漸深區:生態學英文釋義relating to ocean depths between 200 and 2000 meters (corresponds to the continental slope)