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。