Sediment deposits in ditches result in the raising of water tables and damage to crops . 泥沙淤积在排水沟引起地下水位上升，并危害作物。
A raised wire frame should be placed under it with a drain provided in the floor . 在它的下面应当有一个高出地面的铁丝网，地板里设有排水沟。
In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains . 在农田排水中常常采用砾石或过滤层来防止粉细砂和泥沙进入排水沟。
On the map the drains of each field are laid sown 地图上标有每一块地的排水沟。
I know , m coy said . the drain , you mean “我晓得， ”麦科伊说， “你指的是排水沟吧。 ”
The coffee grains plugged up the kitchen drain 咖啡渣堵塞了厨房排水沟。
There is a shallow draining ditch at the exterior of inn 客栈的外面有一条浅浅的排水沟。
Roadways . granite and sandstone kerbstone and gutters 路面.花岗岩和砂岩制路边石和排水沟
