乔布斯以控制狂著称，批评他的人埋怨他设计的产品和系统打着提高用户体验的旗号，却封闭而缺乏灵活性。

Jobs had a reputation as a control freak, and his critics complained that the products and systems he designed were closed and inflexible, in the name of greater ease of use.

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它是一种封闭服务，这意味着用户和观察者均不能看到垃圾信息的检测过程。

It's a closed service, which means users and observers don't really have a way to review the spam detection process.

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iPhone超前的使用体验让它在竞争中脱颖而出，但是它封闭的平台使它将许多新兴市场用户拒之门外。

The iPhone has been effective in advancing usability in the mobile phone industry through competitiveness, however, the platform is too closed off for many customers in emerging markets.

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