The four great Siberian rivers are the Ob (3300 miles), the Yenisey (2550 miles, with the Angara as its main tributary), the Lena (2720 miles) and the Amur (Heilongjiang, 2740 miles) which is the boundary river between Russia and China.是什么意思_The four great Siberian rivers are the Ob (3300 miles), the Yenisey (2550 miles, with the Angara as its main tributary), the Lena (2720 miles) and the Amur (Heilongjiang, 2740 miles) which is the boundary river between Russia and China.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句