| A | B |
|---|
| tributaries | 支流 large streams or small rivers that flow into a big river |
| drainage basin | 流域 area drained by a main river and its channels |
| immature river | 新生的河 young river; a river in an early stage of development |
| mature river | 年代已久的河 an old river; a river that has been here for thousands of years. |
| levees | 河两岸的坝（沉积形成） ridgelike deposits along the river sides. |
| oxbow lake | 堰塞湖--河弯曲部阻塞形成 a U-shaped lake made by deposited rocks that cut off a meander of a river |
| alluvial fan | 冲积扇 a fan-shaped deposit of rocks and sand at the point where a river leaves the mountains and runs out onto a plain |
| delta | 三角洲 triangular formation of sediments deposited at the mouth of a river that flows into sea or a lake |
| flood plain | 河两岸的冲积平原 flat area on both sides of a river that is made by rocks and sand deposited during floods |
| meanders | 河流弯曲部 loops in a river |
