the lower Weihe River的用法和樣例：
例句
- This paper analysed the specialties of the downstream flood change of Weihe River which occurred before and after the river atrophied.
摘要在實(shí)測資料基礎上，本文分析了渭河下游河槽萎縮前后的洪水變化特點(diǎn)及其成因。 - The frequently occurring unordinary flood stage increases the difficulty of flood control practice in the river.
頻繁發(fā)生的異常洪水位現象給渭河下游防洪增加了困難。
