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
A couple of weeks.
两、三个星期吧。
Fall sick and you will see who is your friend and who is not.
困难见友情。
'Is this Woodford Green?' I asked.
“这里是伍德福德草地吗？”我问道。