另一个主要问题是，手机领域缺乏标准化。

Another major problem is the lack of standardization in the mobile space.

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另一个主要问题就是交通对环境的影响，这约占总二氧化碳排放量的25%。

Another major concern is the environmental impact of transport, which accounts for roughly 25% of total carbon dioxide emissions.

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导入和导出数据的难题：BigTable的另一个主要问题是无法导入和导出数据。

Difficulty importing and exporting data: Another major issue with BigTable is the inability to import and export data.

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