词根词缀是词缀al+词根arm,中文意思是n.惊恐;惊慌;恐慌;警报;警报器;vt.使惊恐;使害怕;使担心;给(门等)安装警报器;例句'What have you done?' Ellie cried in alarm.“你都干了些什么?”埃利惊恐地喊道。