a tributary river的用法和样例：
- Zeya， as shown by the illustration provided, is a tributary river of the Amur, as is the Shilka.
but again, the translation might be better rendered to say 在贫瘠的Zeya河畔， 他听说了Shilka河。
- This is a tributary of Zhujiang River.
- The Avon is a tributary of the Severn.
- A stream or river that flows into a larger one; a tributary.
- There was one street apart from a tributary road near the end of the village.