【英语时差8,16】光速与星际高速公路-上
时间：2019-01-22 作者：英语课 分类：英语时差8，16
If you’re driving on an interstate highway, the only thing keeping you from going faster than the speed limit is your sense of civic 1 duty, or perhaps that police car up ahead. There’s one speed limit, however, that most scientists agree nothing will ever break. That’s the speed of light: 186,280 miles per second. As it travels through deep space, light moves at exactly this speed, no more and no less. The speed of light is so reliable 2, we even use it to measure distances between the stars. If it takes starlight fifty years to reach us, we say that this star is fifty light-years away. You might be surprised to learn, however, that light itself does not always travel at the speed of light. Our interstate highways generally have a higher speed limit, but once you enter a city or residential 3 street, the speed limit lowers 4.
- I feel it is my civic duty to vote.我认为投票选举是我作为公民的义务。
- The civic leaders helped to forward the project.市政府领导者协助促进工程的进展。
- I'm afraid the information is not reliable.恐怕消息不可靠。
- Do you think she's reliable?你看她这个人可靠吗？
- The mayor inspected the residential section of the city.市长视察了该市的住宅区。
- The residential blocks were integrated with the rest of the college.住宿区与学院其他部分结合在了一起。