Valuable source of caviar and isinglass; found in black and Caspian seas.
鱼子酱及鱼胶的宝贵来源；产于黑海和里海。
A region of southeast European U. s. s. R. between the Black and Caspian seas.
苏联欧洲部分东南部的地区，位于黑海与里海之间。
Round the north-east of the Black and Caspian Seas were coming the Medes and Persians.
从黑海和里海的东北部来了米堤亚人和波斯人。
A large white sturgeon(Huso huso)of the Black and Caspian seas, whose roe is processed into caviar.
试图对现有的机械进行改进，使其更有效率； 世界上大多数现存的白鲟鱼子酱是苏联和伊朗生产的。
Russia has an extensive coastline of over 37,000km along the Arctic and Pacific Oceans, as well as more or less inland seas such as the Baltic, Black and Caspian seas.
俄罗斯沿着北极和太平洋海岸有着长达37000公里的海岸线，同样有波罗的海，黑海和里海这样或多或少的内陆湖。
Some lakes are called "seas, " although they are not connected to the oceans. The Caspian Sea in Russia, and the Dead Sea between Israel and Jordan are saltwater lakes.
有一些湖泊叫“海”，虽然它们并不与海洋相连。俄罗斯的里海和位于以色列和约旦之间的死海，是咸水湖。
Some lakes are called "seas, " although they are not connected to the oceans. The Caspian Sea in Russia, and the Dead Sea between Israel and Jordan are saltwater lakes.
有一些湖泊叫“海”，虽然它们并不与海洋相连。俄罗斯的里海和位于以色列和约旦之间的死海，是咸水湖。
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