Odontometer
齿轮公法线测量仪
🗣️ 情景例句
more than reading, writing, and arithmetic.
比阅读 、写作及算术更多的东西。
Every medal has its reverse.
事物都有它的反面。
I'm Jim-Jim Green. This is my friend, Bill-Bill Smith. He's American.
我叫吉姆格林，这是我的朋友比尔斯密斯。他是美国人。