Methanedicarbonic acid
[建] 丙二酸
🧩 词语组成解析
🗣️ 情景例句
Don't be mixed up in such business.
不要跟这种事有所关连。
That deep sigh could only express Helen's sadness.
那深深的叹息，不外乎表示出海伦的悲哀。
I could answer sixteen of the question.They were very easy.
其中的16道题。这些题很容易。