1. 采石场：stone mill 碎石机 | stone pit 采石场 | stone powder 岩粉
2. 石坑：stone pine 石松 | stone pit 石坑 | stone 石
3. 采石坑：stone-filled works ==> 堆石工程 | stone-pit ==> 采石坑 | stone-separating device ==> 除石装置
1. A rectangular pit containing stone armor suits was unearthed some 200 m southeast of the grave mound.
2. The cave was formerly a stone pit with a lake at the bottom.