Retention form
[医] 固位形(牙洞)
🧩 词语组成解析
retention
[ri'tenʃən]
n. 保留;记忆力，保持力;滞留，扣留;闭尿;
🗣️ 情景例句
Thanks for your help.
谢谢你的帮助。
I've been looking forward to visiting your factory.
我一直都盼望着参观贵厂。
The party then searched the whole cave thoroughly but did not find anything except an empty tin trunk.
队员们接着又把整个洞彻底搜寻了一遍，但除了一只空铁皮箱外什么也没找到。