rock drill

rock drill

n. 凿石器

例句与用法：

Jane's gone rock climbing with her boyfriend once or twice. She says that it makes her hair stand on end when she looks down at hundreds of feet of empty air.

简和她的男朋友作过一两次攀岩。她说当她在数百英尺高处朝下望时，只见脚下空荡荡的，吓得她胆战心惊。

There's a lot of danger in rock climbing.

攀登岩壁非常危险。

词形变化：

形容词: rock-bottom |