Sayan Mountains造句怎么写

A river rising in the Sayan Mountains of south - central Siberian flowing about965km(600mi)generally north to the Angara River.

The Rivers Ob and Yenisei flow into the Arctic Ocean from the Altai and Sayan Mountains.

The Russian plain is bordered on the south by the Caucasian mountain range. The Rivers Ob and Yenisei flow into the Arctic Ocean from the Altai and Sayan Mountains.