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
I got it.
我猜对了。
In secondary school, children study history and geography.
中学的小孩会读历史和地理。
It had been purchased by a local authority so that an enormous pie could be baked for an annual fair.
某地方当局买下它用来焙制一个巨大的馅饼为一年一度交易会助兴。