Paramucic acid
[化] 仲粘酸
🧩 词语组成解析
🗣️ 情景例句
How long does it take?
要花多久时间？
I wrote novels yesterday.
我昨天在写小说。
No one can plead ignorance of a subject any longer, for these are countless do-it-yourself publications.
由于出版了不计其数的教人自己动手做事的书报杂志，没有人再能说对某事一无所知。