Adjustable retainer
[机] 可调整扣件
🧩 词语组成解析
retainer
[ri'teinə]
n. [机]承盘，挡板;家臣，侍从;[牙科]牙架;保持着;
🗣️ 情景例句
And give her a teaspoon of the medicine after every meal.
每餐之后给她吃一茶匙的药。
Merry Christmas!
圣诞快乐！
That does not prove that it does not exist;
这并不是证实不存在噪音对健康的影响。