If you cannot make a counter offer, then I'm afraid we can't make a deal.
如果你不还价的话,恐怕我们无法交易。
An ass endures his burden but not more than his burden.
驴子能负重,但不堪超过力之所及。
People who work in offices are frequently referred to as white-collar workers' for the simple reason that they usually wear a collar and tie to go to work.