Gutters and downspouts also transport rainwater away from sensitive areas such as doors, walkways, and protected soils.

水槽和落水管雨水也交通远离如门，走道敏感地域，并维护泥土。

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This reduces soil degradation, as freshly tilled soils are shaded and protected from heavy rains and run-off by the trees.

它可以减少土地的退化，通过树木来保持土壤不被暴雨冲走。

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