User needs are both the starting point and the ultimate goal of product development.
任何重复性活动(如惩罚犯罪或葬礼仪式)的功能,在于它在整体社会生活中扮演的角色,从而对维持结构连续性所做的贡献。
The most rewarding part of filmmaking is seeing the impact your story has on others.
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