The existing natural gullies and valises shall be planed to ensure smooth flowing of water, the bed of gullies are to be paved if necessary.
原有天然沟谷应予以整治，确保水流畅通，必要时需对沟床加以铺砌。
The existing natural gullies and valises shall be planed to ensure smooth flowing of water, the bed of gullies are to be paved if necessary.
原有天然沟谷应予以整治，确保水流畅通，必要时需对沟床加以铺砌。
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