详细解释:【医】 减轻充血的, 减充血剂
英语解释：
名词 decongestant:
a drug that decreases pulmonary congestion详细解释：
de.con.ges.tant
n.（名词）A medication or treatment that breaks up congestion, as of the sinuses, by reducing swelling.减充血的药剂：通过使肿块缩小来止住窦等部位的充血的药物或治疗adj.（形容词）Capable of relieving congestion.能减轻充血的