Gingivectomy
n. [医]龈切除术
🗣️ 情景例句
You never know what you can do till you try.
除非尝试，否则你永远都不知道你有何价值。
Last month was December,wasn't it ?
上个月是十二月，对不对？
He is very happy to see his wife.
丈夫见到他妻子，很高兴。