Your offer is not acceptable because we have another supplier offering similar quality products at a 4% discount.
我公司不能接受贵方的报价，因为有另外一家厂商报同样质量的商品时有4%的折扣。
Typically they offer significant savings on bread and some non-bread items that are still of acceptable quality but are not considered "fresh" by their standards.
特别是他们提供一些质量仍然合格的面包，但是根据他们的标准认为已不“新鲜”了，是可以大省一笔的。
If it becomes clear that you aren't a good fit for the position but you know someone who might be, it's not only acceptable to offer a referral, it's usually appreciated.
如果事实证明你不太适合这个职位，但你知道有人适合，那么，提供推荐不仅可行，通常还会获得感激。
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