clicking of joint

例句：

1. 1. The doctor examined her joints carefully before giving her medication.
   医生在给她开药之前仔细检查了她的关节。
2. 2.The sound of the joint clicking is a sign that the machine is working properly.
   关节点击的声音是机器正常工作的标志。
3. 3.He noticed that his joints were aching and decided to take a break.
   他注意到他的关节疼痛，决定休息一下。