She suggested a trip to the shops and hinted at the possibility of a treat of some sort.她建议去逛逛商店，并暗示可能要请客。The essay treats of the economic reform.这篇文章讲的是经济改革。This book treats of the caste system in India.这本书论述了印度的种姓制度。The book treats of the progress of civilization.这本书论述了文明的进步。This book treats of economic problems.这本书探讨经济问题。