1. blocking agent
   阻断剂，阻滞剂，阻滞药
   

1. Two men blocking the path put the wind up her.
   两个人堵住路使她担惊受怕。
2. A bracket or block supporting a balcony or cornice.
   一段支撑阳台或飞檐的支架或木块.
3. The fire won't burn because the flue is blocked up.
   因烟道堵塞火烧不起来。
4. The child has earache caused by blocked Eustachian tubes.
   这孩子因耳咽管堵塞而引起耳痛.
5. The whole basin of water may be turned into a block of ice.
   整盆水就会变成一大块冰。

　1个名词解释