n.定金，保持器，(聘请律师等的)预付费用，保留金，(为保留租房而付的)租房订金，牙齿固位体，仆人，家仆

原形：retainer复数：retainers

The dentist prescribed a retainer to keep my teeth in place after the braces came off.
牙医建议我佩戴保持器，以便在摘下牙套后保持牙齿位置。
She wears a clear retainer at night to prevent her teeth from shifting.
她每晚佩戴透明保持器，以防牙齿移位。
My orthodontist fitted me with a custom-made retainer to maintain the alignment of my teeth.
正畸医生为我定制了一副保持器，以保持我的牙齿排列整齐。
The retainer is an essential part of my oral hygiene routine.
保持器是我口腔卫生程序中不可或缺的一部分。
After the surgery, the doctor recommended I use a retainer for several months to ensure proper healing.
手术后，医生建议我使用保持器数月以确保伤口愈合良好。
Many people prefer removable retainers over fixed ones because they're easier to clean and maintain.
许多人更喜欢可拆卸保持器，因为它们更容易清洁和保养。
The patient's parents agreed to cover the cost of the retainer as part of their dental insurance plan.
病人的父母同意支付保持器费用，这包含在他们的牙科保险计划内。
It's important to wear your retainer consistently to see long-term benefits.
坚持佩戴保持器对于长期效果至关重要。
In some cases, orthodontists may recommend wearing a night retainer and a day retainer for optimal results.
在某些情况下，正畸医生可能建议早晚都佩戴保持器以达到最佳效果。
After the orthodontic treatment, the retainer serves as a constant reminder of the progress made.
正畸治疗结束后，保持器是所取得进步的持久见证。