right principal bronchus

例句：

1. 1. Thepatient was diagnosed with a right mainbronchus obstruction.
   患者被诊断出右主支气管阻塞。
2. 2. During surgery, the surgeon carefully removed the right primarybronchus.
   在手术中，外科医生小心地切除了右主支气管。
3. 3. Right main bronchus obstruction is a serious condition that requiresimmediate medical attention.
   右主支气管阻塞是一种严重的状况，需要立即医疗关注。