adj.有镇静作用的
n.镇静剂
Despite being classified as a depressant, alcohol initially acts as a stimulant on the central nervous system. 虽说被划定为镇静剂，酒精最初却是被当作中枢神经系统的兴奋剂。
抗抑郁药
n.抗抑郁剂
adj.抗抑郁的
n.兴奋剂
