Intelligence officials said the head of al-Qaida's operations in Afghanistan used a middleman to communicate with him.

VOA: special.2009.10.17

So, you send it off to a middleman who does the turning of the grapes and the olives into the liquids that are necessary, and he takes a good bit of the profit.

你可能会将它们卖给中间商,他们知道如何将葡萄和橄榄榨成液体,然后从中收取可观的利润

耶鲁公开课 - 古希腊历史简介课程节选