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旅客列车拥挤不堪,无立足之地的人想：我要是有块立足的地方就好了。有立足之地的人则想有一个座位,有座位的人想有个上铺躺躺,有上铺的人想享受下铺的便利,有下铺的人则期望软卧包厢的舒适。
Passenger trains are overcrowded, and people without a foothold think: If only I had a foothold, I would be fine. People who have a foothold want to have a seat. People with seats want to have a top bunk. People with top bunks want to enjoy the convenience of the bottom bunk. People with bunk beds want the comfort of soft bunks.