spacer gel

例句：

1. 1.The spacer gel helps to keep the joints from moving around too much.
   这个间隔凝胶有助于保持关节不移动过多。
2. 2.The spacer gel is used in orthodontic treatment to align teeth.
   间隔凝胶用于正畸治疗，以对齐牙齿。
3. 3.The spacer gel was a revolutionary product that changed how we treated dental problems.
   间隔凝胶是一种革命性的产品，改变了我们对牙科问题的治疗方式。