zài / jiùshì / jiāoyì / zhōng / zhōng bǎo / jì / fùzé / jièshào / shuāngfāng / yě / yào / wèi / jiāoyì / zuò / dānbǎo

在旧式交易中，中保既负责介绍双方，也要为交易作担保。

In traditional transactions, the middleman and guarantor introduced the parties and also guaranteed the deal.