英文版的两事物的对比

Shanghai's subway system is cleaner than New York's.

To get the obvious out of the way: Shanghai’s subway system is one of the world’s youngest. But I don’t think that the fact that NY’s subway system is so old disqualifies any comparison with other subway systems. New York’s system doesn’t (only) have an infrastucture problem. It has a lack of basic maintenance and sanitation problem. In part, this is ultimately a problem of expectation. The subway system has been a run-down rat’s nest for decades (as in four or five of them), and most people who live here are just used to it. Another reason the subway system hasn’t improved much over the years is the market. Who takes the subway in Shanghai? And who takes it in New York? For the most part, in Shanghai the typical rider is a member of the professional class. In New York, the typical rider is either young or lower middle class. Now those are two gigantic generalizations, but that is how I would differentiate subwa