Tannometer
鞣液比重计
🗣️ 情景例句
Speaking of promoting the book,
说起促销书的事
It's a good thing you reminded me to take my heavy coat.
谢谢你提醒我拿我的厚衣。
Good morning, Mr. Zhang. I'm sorry to trouble you.
早上好，张先生。很抱歉打扰您。