Rackwork
齿条, 齿条加工, 齿条机构
🗣️ 情景例句
See you later.
再见。
What were you doing when I called you on the telephone?
当我打电话给了你时，你正在做什么？
I insist on telling him how great you were.
我一定要告诉他你是多么了不起。