be based on/rest on an assumption بر اساس یک فرض خاص بودن Our plans were based on the assumption that everyone would be perfectly willing to help برنامه‌های ما بر این اساس بودند که همه کاملاً تمایل دارند که کمک کنند. on the assumption that با این فرض که I went to the cafeteria on […]