Broken bricks were rammed down in the trench to make a base for the concrete.
沟内先倒了碎石,并加以夯实作为混凝土的基础。
A long narrow trench or furrow dug in the ground, as for irrigation, drainage, or a boundary line.
沟渠,排水沟,水道在地面上狭长的沟渠或细沟,用于灌溉、排水或用作分界线
I forgot to dig a trench around the tent.
我忘了在帐篷四周挖一条沟。