这些拍卖商买卖赃物的做法，正违反行规。

The auctioneers are violating a code of practice by dealing in stolen goods.

五行八作各有各的规矩，不论做哪一行，都要守行规。

Each profession has its own rules. No matter what you do, you must follow them.

鉴于业内行规，特申请给该两名记者每人1000元车马费(该费用已在市场预算中列出)。请批准。

According to the guild regulations, we should pay the two reporters 1000 RMB each to cover their travel expenses, which has been planned in the market budget.