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1.20 1990s, China's economy has developed rapidly
2.Population and overcrowding of the city's busiest traffic and we are very worried about
3.Decoration brings us back to the hotel over the years
4.After experiencing repeated failures, but how did he remain confident?

1.20世纪90年代中国经济有了飞速的发展。
In the 1990s , economy of Chian developed rapidly.
2.人口过分拥挤和繁忙的交通使我们对这个城市十分忧虑。
What worries us most is the heavy trafic and overcrowded cities.
3.饭店的装饰把我们带回到过去的岁月。
The decoration of the hotel brings us back to the past time.
4.在经历了一次又一次的失败后，他是怎样保持自信的。
How did he have confidece in himself after one failure after another?