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weep hole (護壁等上)滴水的洞孔。

weeper

The oozing out of a large quantity of muddy water from the base or the weep holes of a slope indicates that the slope is saturated with water 斜坡底部或疏水孔有大量泥水透出時,顯示斜坡內的水份已飽和,斜坡之中段或頂部有裂