Rackwork
齿条, 齿条加工, 齿条机构
🗣️ 情景例句
Ah! Miss Stewart! Welcome!
嗨！ Stewart小姐！ 欢迎你！
All good things came to an end.
天下无不散之宴席。
Class 3 did very well in the school sports meeting last week.
“3班在上星期的校运会上表现很好。