A concrete wall is built to stop silt from leaking to the conservation land.
A concrete wall is built to stop silt from leaking to the conservation land.
一道水泥墙修筑起来，用以防止泥沙流进保留地。
A concrete wall is built to stop silt from leaking to the conservation land.
一道水泥墙修筑起来，用以防止泥沙流进保留地。