Methanedicarbonic acid
[建] 丙二酸
🧩 词语组成解析
🗣️ 情景例句
What do you do when he cries like that?
像他哭得这个样子该怎么办？
A little labour,much health.
适量的劳动大有益于健康。
Which books did you buy?
您买的是两本什么书？