Tannometer
鞣液比重计
🗣️ 情景例句
I majored in economic and trade English.
我主修的是经贸英语。
You've got an express mail.
你有特快专递。
The plane was then able to rise and it cleared the mountains by 400 feet.
于是飞机可以上升了，它在离山头400英尺的高度飞越了过去。