Our basketball team gave the opponents a drubbing with a 30-point lead.

drubbing 是动词 drub 的名词形式，drub 原意是"用力击打"，引申为"彻底击败"。drubbing 在这里指"彻底的失败"或"惨败"，强调比分差距大、优势明显的胜利。