Cams
n. 凸轮（cam的复数）
🗣️ 情景例句
If you don't apply to the relevant department your passport will never be approved.
如果你不向有关部门申请，你就得不到护照。
We use service centers at major stores. They ship goods back to our national service center for repairs.
我们采用大店服务中心，他们可把产品运送到我们的国内服务中心维修。
Which would you like, a cup of tea or a glass of milk?
你想来点什么，一杯茶还是一杯牛奶？