史密斯先生在钻石上雕刻小平面的精湛技巧真是了不起.The skill with which Mr. Smith faceted the diamond is remarkable.在大理石上雕刻是困难的.It is difficult to engrave in marble.那栋古老建筑的门廊上雕刻了奇形怪状的脸.Grotesque faces are carved over the doorway of the old buildi...