这个词是什么意思？
The larger air passages of the lungs arising from the terminal bifurcation of the TRACHEA. They include the largest two primary bronchi which branch out into secondary bronchi, and tertiary bronchi which extend into BRONCHIOLES and PULMONARY ALVEOLI.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001980 · MeSH 2026。
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