1. Ever since, people have had difficulty in deciding whether the craft should be ranged among ships, planes, or land vehicles----for it is something in between a boat and an aircraft.
    自那以后，人们很难决定是否应该将这种运载工具列为轮船、飞机，或是陆上交通工具，因为它是介于船和飞机之间。

2. Engineers and planners must build new cities and new kinds of transportation.
    工程师与设计师必须建设出新型的城市，制造出新型的交通工具；

3. Edwin Land, one of America's most productive inventors, claimed the idea leading to his invention of the Polaroid camera came from his three-year-old daughter.
    美国最具创造力的发明家之一埃德温·兰德说，使他产生发明宝丽来相机这一想法的是他三岁的女儿。

4. By working at tremendous speed, the men managed to get the dish on to dry land before the wave returned.
    工人们动作迅速，终于赶在那股大浪返回之前把盘子拽到了岸上。

5. Billion city would have many levels, so that various transportation systems could work without interfering with each other.
    十亿人口城市有许多层平面，因此各种运输工具行驶时不会彼此干扰。

6. But studying my textbooks late at night in the library of the Indian Institute of Technology (IIT), I would dream, not of India, but of America, the land of opportunity.
    但是, 当我深夜在印度技术学院的图书馆里啃着书本的时候，我脑子经常想的不是印度，而是美国这个机会之国。

7. But there is a problem for people with free time in a tightly packed country where land is dear:
    但是在一个人口拥挤，土地昂贵的国家，有了闲暇的人们却遇到了这样一个问题：

8. Watching the first man land on the moon, we beheld a sighy never seen before by man .
    看那踏上月球的第一人，我们看到了人类所未见的景象。

9. While we were waiting to land, a flight attendant told us to keep calm and to get off the plane quietly as soon as it had touched down.
    在我们等待降落时，一位空中乘务员告诉我们要保持镇静，待飞机一着陆，就马上不声不响地离开飞机。

10. With less land for cattle and sheep, less meat like beef and lamb is being produced.
    由于可供饲养牛羊的土地减少，牛羊肉越来越少。