Some roof gutter exchange downspouts for baffle type designs break up the stream of drained water, so that it does not erode the ground below.

一些屋顶排水沟的挡板式设计打破了排水水流交换落水管，所以它不会削弱地下。

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Some roof gutter exchange downspouts for baffle type designs break up the stream of drained water, so that it does not erode the ground below.

一些屋顶排水沟的挡板式设计打破了排水水流交换落水管，所以它不会削弱地下。

youdao