我阔别中国四年以后，就这样又回到那里，这丝毫没有夸张的成份。

That, without any exaggeration, was exactly how I returned to China, after a four-year absence;

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所以我没有点击“下一步”（Forward），而是点击了“上一步”（Back）按钮，这样又回到了原来的屏幕。

Instead of clicking the Forward button, I clicked the Back button, which returned me to the original screen.

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研究表明，在美国，将道路的规模扩大一倍，只会使交通量增加一倍，这样我们又回到了事情的起点。

In the US, studies have shown that doubling the size of a road can simply double the traffic, taking us back to the starting point.

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