基本解釋[地理] 常流河；常年河川詞組短語(yǔ)短語(yǔ)perennial l stream 常劣perennial interrupted stream 常年間斷水流non -perennial stream [水利]非常流河Perennial Stream Flow 常年流量Stream perennial 長(zhǎng)流河川perennial stream更多詞組專(zhuān)業(yè)釋義地球科學(xué)常年河常流河常劣土木建築工程常流