metros

1. Beijing and other metros are building more subway lines to ease commute times for its residents.

2. If the nation can effectively use recycled water for purposes other than drinking, it will contribute greatly to warding off water scarcity in big metros.

3. If you simply have a look at the crammed buses or metros you will find out how hard it is to preserve such a tradition.

4. The dream is being realized as the buses and metros are disinfected and more modern vehicles are put into services.

5. This is the largest ever security inspection in the city's metros and aims to bring the environment along the metro stations into order.

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6. Tickets for the Beijing subway are cheaper compared to metros in other cities.

7. Some other experts have classified cities into different categories, saying that only big cities with large populations need metros.

8. metros

8. If cities without suitable geographical conditions insist on building metros, they would be ignoring passenger safety.

9. metros

9. Second, farmers prefer big cities or metros to smaller ones as they have more employment potential.

10. As cities are rapidly building and expanding metro systems, more and more people will use metros regularly.