hole:
n. 洞,孔洞穴,穴突破口
vi. 凿洞,穿孔(高尔夫球等)进洞
vt. 凿洞
The hole was filled with leaves and branches.
这个洞口被树叶和树枝填满了。
borehole:n. 钻孔,井眼(为探测石油或水)地上凿洞
Keep the drill centred in the borehole while it ascends and descends.
当钻头上下钻时,要把钻孔保持在中心。