Calcarea usta
[医] 生石灰, 氧化钙
🧩 词语组成解析
[医] 钙质纲
abbr. 美国网球协会（United States Trademark Association）
🗣️ 情景例句
I would be happy to show you around.
我很乐意带你到四周看看。
What kind of work do you do? Are you a salesman?
你做什么样的工作？ 你是一售货员吗？
Look at the rain! It's heavy, isn't it?
瞧这雨！下这么大，是吧？