露天開采; 採掘; 採石; 拔蝕作用
Quarry \Quar"ry\, v. t. [imp. & p. p. {Quarried}; p. pr. & vb.
n. {Quarrying}.]
To dig or take from a quarry; as, to quarry marble.
quarrying
n : the extraction of building stone or slate from an open
surface quarry