好的设计不是那么容易能创造出来的，反倒是一件非常有挑战的事情。不过，有很多种方式可以帮助设计师们提高设计能力，其中之一就是分析其它优秀设计师的作品细节来获取灵感。因此，这篇文章收集了30+免费的精美 iPhone, iPad, iOS, Mac 界面素材分享给大家。
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