Tricalcium
三钙
🗣️ 情景例句
May I see the mirror, please?
我可以照照镜子吗？
You saw that movie, didn't you? Was it interesting?
你看过这部电影了吧？精彩吗？
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。