我们应该尽一切努力保护我们的森林。

We should try every means to protect our forests.

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研究人员表示，为了确保城市健康发展，种植和保护树木是必要的，但我们还需要做更多的工作来更好地了解城市树木，因为它们可能与乡村森林不同。

Researchers say planting and protecting will be needed to make sure cities can develop healthily, but more needs to be done to have a better understanding of city trees which may be different from countryside forests.

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我们知道在保护世界现存的热带森林的同时可以实现这个目标。

We know that this can be done while protecting the world's remaining tropical forests.

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