During the time I internship in your company,I gain understanding on how the organisation,enterprise culture,environment of the company.Thus,I believe I can adapt to the work faster,I was serious and detailed on that time,I never do any mistake,I have a good relationship with the colleagues in this company.I learned a lot from my mentor,so I believe I can adapt to the work even faster,I am really gratefu to her.Recently I accumulated some experiences from my work,I believe I can do a better job now.
希望可以帮到你!（我又在一个部分小改了一点,读起来比较通顺,意思也没啥变到）
不行的话可以和我说,我可以在翻译!行的话,:)