Walking in Frankfurt last week, I began to worry I was going in the wrong direction. There was an easy way to check. The map on my company iPhone would show either that I was heading towards the river, which would be good, or away from it, which would not.
上周漫步在法蘭克福街上，我開始擔心自己有沒有走對方向。檢查起來倒是很容易。公司配給我的iPhone上有地圖功能，它可以顯示出我是在朝河邊走（那就走對了），還是遠離河邊（那就走錯了）。
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