Catechutannic acid
[医] 儿茶鞣酸
🧩 词语组成解析
🗣️ 情景例句
Are all the classes within walking distance?
所有的教室都在步行范围之内吗？
The cobbler must stick to his last.
安分守己。
What's the matter, children?
怎么啦，孩子们？