今天，在大多数大城市，水是仅使用一次，然后排入下水道系统。
Today, in most large cities, water is used only once and then discharged into a sewer system.
我不确定。在大多数大城市里交通都很糟糕。我想纽约的交通更糟。
I'm not so sure. It's pretty bad in most big cities. I think the traffic in New York is worse.
我们正面临着一个大问题，这关系到空间，在大多数大城市中，由于飞涨的租金，文化性场所一直在缩减消失。
There is a big issue that we are facing, and this is access to space, cultural venues have been disappearing in most of the big cities due to "skyrocketing" rents.
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