基本解释n.阻挡之物或人；阻断剂；拦网队员同根派生 英汉例句用作名词 (n.)This new blocker for the treatment of AIDS has opened up a new way.这种新型阻断剂，为治疗艾滋病开拓了一个崭新的途径。The calcium channel blocker had similar effect and was concerned by doctors.而钙通道阻滞剂治疗消化性溃疡的疗效已引起广大医生的关注。