re·gard·ing/rɪ`gɑrdɪŋ; rɪˈɡɑːdɪŋ/ prep formal a word used especially in business letters to introduce the subject you are writing about 【正式】 关于，有关〔尤用于商业信件中，以引出事由〕: Regarding your recent inquiry, I've enclosed a copy of our new brochure. 关于您最近的询问，我已附上一份我们新的小册子。