Radicular retainer
[医] 根管固位体
🧩 词语组成解析
a. 根的, 小根的
retainer
[ri'teinə]
n. [机]承盘，挡板;家臣，侍从;[牙科]牙架;保持着;
🗣️ 情景例句
He's hooked on cocaine.
他吸咖啡因上瘾。
This professor has put all of his students to sleep except two.
这位教授使得除了两人以外的所有学生都入睡了。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。