But remember the person who I said gets pain when they extend, usually an older person with a more arthritic or stenotic condition in their back.

但请记住， 我提到的那位在伸展时感到疼痛的，是年纪较大且背部患有更严重节炎或椎管狭窄症的患者。

It is often preceded by an ejection click caused by the opening of the stenotic valve.

在此之前，经会出现由狭窄瓣膜打开产生的喷射性喀喇音。