Metacarbonic acid
[化] 碳酸
🧩 词语组成解析
🗣️ 情景例句
It's almost ten o'clock.
现在已经快十点钟了。
What's your nationality?
你是什么国籍？
A fine rain began to fall on our heads and the temperature had dropped.
一阵小雨落到我们头上，气温开始下降了。