It is possible to switch all stores to the new version simultaneously, but a more practical approach is to let some or all of the stores upgrade just a few of its POS terminals to start with.
当然，可以要求所有连锁店一起切换到新版本的应用程序，但更实际的方法则是让一些或全部连锁店开始只升级其部分 POS终端。
We visited Foursquare HQ yesterday evening, just a few hours before the company flipped the switch on its new iPhone app.
昨天傍晚，我们参观了四方公司总部，恰好是在他们关掉新的iPhone应用程序的几个小时前。
We visited Foursquare HQ yesterday evening, just a few hours before the company flipped the switch on its new iPhone app.
昨天傍晚，我们参观了四方公司总部，恰好是在他们关掉新的iPhone应用程序的几个小时前。
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