So they would have local, sort of higher class, local elites, would bid for the right to collect local taxes, and so the Romans would take the highest bid.

所以他们安排当地人，算是上层阶级，本地精英，竞拍当地收税权，这样罗马总是能获得最高竞价。

耶鲁公开课 - 新约课程节选

Normally, when you have a dealer, the dealer has a-- when we talk in terms of price the dealer has an ask, which is higher than the bid.

一般来讲,当你和中间商交易的时候,如果以价格形式谈论,中间商的买入价,会比卖出价高

耶鲁公开课 - 金融市场课程节选