1. The serial killer's actions were driven by sadism, deriving pleasure from causing pain to others.
這個(gè)連環(huán)殺手的行為源于虐待狂,從給他人造成痛苦中獲得快樂。
2. He derived great sadistic pleasure from torturing small animals as a child.
他在孩童時(shí)期以折磨小動(dòng)物獲得巨大的虐待快感。