تقویت شنیداری و دامنه لغات زبان انگلیسی - درس اول

دو صفحه pdf و یک فایل صوتی Manufacturers are currently competing with each other to produce a form of green packaging. Packaging is an important part of marketing these days, but much of it is a threat to the environment . There are two reasons for this. The production of such packaging uses up a great deal of energy and the cartons, wrappers , etc are often difficult to dispose of when they become waste material. تولید کنندگان در حال حاضر با یکدیگر رقابت می کنند برای .