Consumer surplus
[经] 消费者盈余
🧩 词语组成解析
🗣️ 情景例句
Was it serious?
病得很重吗？
You have to change at chicago station.
你必须要在芝加哥站转车。
He agreed that a train did come into the station at the time on the paper and that it did stop, but only to take on mail, not passengers.
搬运工说，正如纸条所说，确有一趟火车在那个时刻到站，但它只停站装邮件，不载旅客。