river systems的用法和樣例：
例句
- Overexploitation of river systems and oases has exacerbated the problem.
過(guò)度開(kāi)發(fā)河流系統和綠洲使水資源問(wèn)題進(jìn)一步惡化。 - Foremost among these is the existence of the Himalaya Mountains, which produce southern Asia's monsoon climate and vast river systems.
最重要的因素是，喜馬拉雅山的存在造成了南亞的季風(fēng)氣候和龐大的河流系統。
