My hometown is in the upper reaches of the river.

我的家乡在这条河的上游地区。

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Algae outbreaks used to happen in May and June in Shanghai, but it only threatened the upper reaches of the Suzhou River.

据了解，近年来绿萍每年5-6月份都会在沪爆发，但只对苏州河上游构成威胁。

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Werner used small cuttings of sprouts and other plant material, including some cuttings from the upper reaches of giant sequoias.

就红杉来说，沃纳先生使用一截一截的树芽和其它植物材料，包括从巨杉顶部截下来的一些木块。

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In the upper reaches of Wall Street, talk of another financial crisis is dismissed as alarmism.

NEWYORKER: What Good Is Wall Street?

The Chinese have already constructed several dams across the upper reaches of the Mekong within China.

ECONOMIST: Further delays to a planned giant dam in Laos

But that 1.8m starting point is mainly from the land and the upper reaches of the sea.

ECONOMIST: Biodiversity