Camming
凸轮系统
🗣️ 情景例句
She feels bad, too, Grandpa.
她也很沮丧， 爷爷。
We want to cancel the contract because of your delay in delivery.
由于贵方交货拖延，我方要求取消合同。
After breakfast, I sent the children to school and then I went to the shops.
早饭后，我送孩子们上学，然后就去了商店。