Sylvic acid
[化] 松香酸
🧩 词语组成解析
🗣️ 情景例句
I don't want a dead end job.
我不想做没有前途的工作。
It took him a long time to make up his mind.
下决心花了他很长时间。
they had escaped from the paper bag and had taken complete possession of the hall!
它们从纸袋里逃了出来，爬得满厅都是！