经过一段时间之后，人们开始认识到其中一个显著问题是往返旅程。
After a period of time, people started to recognize that one significant problem was round-tripping.
现在的一大问题是，人们要用多长时间才能恢复到商场大举购物的习惯。
The big question is how quickly shoppers can be lured back to the malls.
问题是如何在这么短的时间内筹集到足够的资金。
The problem is how to collect enough money in such a short time.
而解决这一问题的方法在截止到目前的很长一段时间里，并没有被很好的提出来。
But up to now, good methods to solve these problems have not been proposed.
在我回答出你的前一个提问的这段时间里，你可以用你想的到的方法自己去查证一下这个问题。
You can use the time before I answer your previous question to think about how you can check out the answer yourself.
在我回答出你的前一个提问的这段时间里，你可以用你想的到的方法自己去查证一下这个问题。
You can use the time before I answer your previous question to think about how you can check out the answer yourself.
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