84669 person learning
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20005 person learning
5487 person learning
7821 person learning
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即APP支持两种语言，一种简体中文，一种英文。如果系统语言为简体中文，那么APP为简体中文，如果系统语言为英文，那么APP为英文。如果系统语言为第三方语言，如日语。那么这个时候他的语言是如何获取，默认语言是什么？
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