retainer
ri'teinә
基本解释
n. 家臣, 侍从, 保持者
[化] 保持器; 定位器; 隔栅; 隔环; 护圈; 止动器; 止动装置
英文释义
n. a fee charged in advance to retain the services of someone
n. a dental appliance that holds teeth (or a prosthesis) in position after orthodontic treatment
词形变化
上一个单词：retaineddeciduous teeth
下一个单词：retainer bolt