An agent may not act in an agencytransaction for a party whose interests are adverse to those of his principal.
他人委托的对本人利益有害的代理事项，代理人不能接受。
2
We regret to say that since there is so far no transaction concluded between us, we have to decline your quest for agency.
由于我们双方迄今未成达任何交易，很遗憾我方不得不拒绝贵方申请代理的要求。
3
As a matter of fact, this "transaction" involves two contracts: one between the agency and its client and another contract between the agency and the freelance translator.