1. When the teacher asked if anyone wants to share their experiences, everyone lowered their head.2. We will not succumb to temptation.3. I will never bow to evil.
 lower one's head bow one's head succumb to something bow to something很普遍. 是鞠躬或敬禮的意思. 指向某事或某人屈服. "will not bow to evil" 可解讀成 "不向惡勢力低頭"
When I asked him for directions, he gave me a gooy smile.