1. ´Sir, we welcome you to our city.
    "先生，欢迎您光临我们的城市。

2. After taking off, we were flying low over the city and slowly gaining height,
    起飞之后，我们在城市上空低低地飞行，然后慢慢爬高。

3. As conditions deteriorate, city populations would eventually collapse due to malnutrition, disease, and perhaps violence.
    由于条件的恶化，城市人口最终会因营养不良、疾病蔓延，也许还因暴力行为而锐减。

4. A city of one billion could provide very desirable place for people to live and not even seem crowded.
    一个具有十亿人口的城市能够成为人们非常称心的居住的地方，甚至于不会拥挤。

5. All air in Billion City would be passed through a cleaning system to remove dust particles, pollen, noxious gases and other pollutants.
    十亿人口城市中所有的空气都通过净化系统来消除灰尘、花粉、有害气体及其它污染物。

6. All kinds of new technologies are becoming available to help with city problems.
    所有各种新技术都可用来帮助解决城市问题。

7. After landing at the Gale Morghe Airport, about five miles south of Teheran, we drove into town along a road which, as we arrived at the city limits, was lined with people.
    在德黑兰以南约5英里的加尔莫尔盖机场降落后，我们驱车沿着公路进入城镇。当我们进入市区时，公路两旁站满了人。

8. "This is London," said Murrow, while the bombs fell and flames spread on the streets of the city.
    当炸弹纷纷落下、火焰在全城街道四处蔓延的时候，默罗在播音:"这是伦敦。"

9. A city bus passed. It was 3:35 AM.
    一辆公交车开了过去，这时是凌晨3：35。

10. A general knowledge of a city's taxi-taking customs can also make you more comfortable during your travels.
    大致了解一个城市乘坐出租车的习惯也可以使你的旅程更加愉快。