why transition
为什么过渡
以上为机器翻译结果，长、整句建议使用 人工翻译 。
And that is why the transition period was announced at the same time that the rule was announced.
WHITEHOUSE: Press Briefing
Beyond the expense associated with adding a touch screen, and beyond the corporate decision to delay their inclusion, there are a number of reasons why the touch transition is years away from completion.
FORBES: How Long Until Every Display is a Touch Screen?
This transition is why big data is important.
FORBES: Big Data is Creating A Digital Nervous System
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