Methanedicarbonic acid
[建] 丙二酸
🧩 词语组成解析
🗣️ 情景例句
Grandpa, get the net, please!
爷爷 ，请把网子拿来！
I often go home at noon.
我常常在中午回家。
Are these bags heavy? No, they're light.
不，是轻的。