1、The river system is one of the most important ecological system.
河流系統(tǒng)是自然界最重要的生態(tài)系統(tǒng)之一。

2、Amazon River system and French Guiana.
分布亞馬遜河系統(tǒng)和法屬圭亞那。

3、The river system where the alignment passes by is not developed.
線路經(jīng)過地區(qū)的河流水系較不發(fā)達(dá)。

river system翻譯