Thousands of trees are cut down.

成千上万的树被砍伐。

youdao

Many trees are cut down to build more factories.

许多树木被砍伐，建立更多的工厂。

youdao

When trees are cut down, there is nothing to hold the soil in place.

树木被砍伐了，山坡上就没有什么东西能够把土壤保持住了。

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Generally, if more trees are cut down then there would be fewer of them to absorb the carbon emissions.

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The site claims that 5 million trees are cut down each year to make phone books and that only 22 percent of those phone books are properly recycled.

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ENVIRONMENTALISTS, scouring Cambodia's jungles for evidence of illegal logging, ask a passing farmer where trees are being cut down.

ECONOMIST: Just chopping it down