一个意思,关于的意思（一般用在事由的前面）
Regarding to your letter on 10th/June ,we are pleased to give an offer for the following .
With refernce to your letter on 10th/June ,we are pleased to give an offer for the following.
关于你们6月10号的信件,我们给予以下报价.
用with reference to、regarding各造一个句子