Cementocyte
牙骨质细胞
🗣️ 情景例句
Please tell me about your working background.
请告诉我你的工作背景。
Hello, it's a pleasure to meet you all.
你们好，很高兴见到大家。
You've done very well. It's a pity you missed the sports meeting last week.
你学得不错嘛。很可惜，你错过了上周的运动会。