柯林斯词典bronchiole /ˈbrɒŋkɪˌəʊl/ 1. N any of the smallest bronchial tubes, usually ending in alveoli 细支气管 返回 bronchiole剑桥词典in the lungs , one of the very small tubes that branch out from the bronchi and connect to the alveoli (= little air bags ) 细支气管 返回 bronchiole