Baltic Sea
- an almost landlocked sea of northern Europe, between Sweden, Finland, Russia, Poland, Germany, and Denmark. It is linked with the North Sea by the Kattegat strait and the Oresund channel.波罗的海（位于北欧, 几乎为陆地包围, 在瑞典、芬兰、俄罗斯、波兰、德国和丹麦之间, 通过卡特加特海峡和厄勒海峡与北海相连）。