地形对降雨量、产流量和产沙量的影响及其估算是一个十分重要的课题，同时也是一个相当困难和研究基础十分薄弱的课题。
The impact of topography on the sediment yield and runoff generation is an important project and at the same time is an little studied problem.
它们完全来自于印度洋。受云南独特地形的影响，热带季风带来了充沛的雨量。
They come all the way from the Indian Ocean. Channelled by Yunnan's unique geography, they bring with them the moisture of the tropical monsoon.
受云南独特地形的影响，热带季风带来了充沛的雨量。
Channelled by Yunnan's unique geography, they bring with them the moisture of the tropical monsoon.
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