stenosis of lacrimal punctum

例句：

1. 1. The narrow passage was causing a lot of traffic congestion.
   狭窄的通道造成了严重的交通堵塞。
2. 2. The heart valve stenosis is a common cause of heart failure.
   心脏瓣膜狭窄是心脏病发作的常见原因。
3. 3. Due to the stenosis, the blood flow through the artery was reduced.
   由于狭窄，通过动脉的血流减少了。