我们不应让废弃物污染我们的河川。

We should not pollute our rivers with waste.

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时间是流淌的河川，幸福属于顺流而下者。

Time is flowing rivers, happiness belongs to the people.

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百分之四十的河川水道已变得不可饮用。

Forty percent of the waterways have become undrinkable.

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山丘区河川基流分割方法很多，采用不同方法的分割成果不尽相同。

There are many methods to separate the river base flow in mountainous areas.

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我们的土地由许多河川供水。

Our land is well watered by numerous rivers.

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研究了该地区河川径流与当地气候变化之间的关系；

First the relationship between streamflow and local climate change is reviewed.

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河川径流是一种复杂的非线性时间序列。

Stream flows are sorts of complicated nonlinear time series.

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河川径流是一种复杂的非线性时间序列。

Stream flows are sorts of complicated nonlinear time series.

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