英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

美国有线新闻 CNN 朱诺号探测器进一步解密木星 美国即将进入夏令时

时间:2018-05-03 02:32来源:互联网 提供网友:nan   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

 

AZUZ: Compared to earth's mass, Jupiter is thought to be much larger than that. And scientists say NASA's Juno spacecraft has led to new findings about Jupiter.

For one thing, they believe the planet's surface has bands of gas and winds that flow very quickly in opposite directions. They don't know how deeply these bands extend, though, but information from Juno has led them to conclude that Jupiter's outer layer extends 1,900 miles beneath the surface of the planet.

So, how did they come up with this? Juno took measurements of Jupiter's gravitational field, which scientists use to more deeply analyze1 the planet. They also concluded that though Jupiter's interior is thought to be fluid, it rotates like a solid body.

The Juno mission cost the U.S. a little over $1.1 billion. It's hoped to help scientist better understand the solar system's largest planet.

Jupiter is located fifth in line from the sun. Both Jupiter and the Juno's spacecraft were named after characters in Roman mythology2.

Back down to earth now, the United States is gearing up for a time change that said to give Americans more light in the evening. Actually, the light itself won't change but the time on the clock when it's still light outside well.

Daylight Savings3 Time begins when clocks are moved forward one hour. The exact technical time when this is supposed to happen is at 2:00 on Sunday morning when it will instantly become 3:00. It could mean one fewer hour of sleep unless we go to bed early, and it could make us late for everything on Sunday if our clocks aren't set.

There are historic reasons for springing forward.

JENNIFER GRAY, AMS METEOROLOGIST: So why do we change the clocks ahead one hour in the spring and back one hour in the fall?

Well, it's actually to reduce the electricity consumption by extending the daylight hours.

SUBTITLE4: Why do we change our clocks?

GRAY: In the U.S., we change our clocks at 2:00 a.m. on the second Sunday in March. That begins Daylight Saving Time, that's when we spring ahead.

On the first Sunday in November, we change our clock at 2:00 a.m. again, that's actually just going back to Standard Time.

Believe it or not, this started with an idea from Benjamin Franklin. Franklin did write an essay suggesting that people could use less candles if they got up early and made better use of daylight.

In 1918, the Standard Time Act established time zones, and Daylight Saving Time. But not all states participate. To this day, most of Arizona and all of Hawaii do not change their clocks.

Over 70 countries across the world observe Daylight Saving Time, with notable exceptions of China and Japan.

In 2007, we actually change the date of when we set our clocks back an hour to the first week in November. This helped protect trick-or-treaters by giving them an extra hour of daylight.

One of the other lines of thinking was that we would have a better voter turnout on election years.

Experts say each time you change your clocks, it's always a good idea to change those batteries in your smoke detector5 and always look forward to fall when you get that extra hour of sleep.


点击收听单词发音收听单词发音  

1 analyze RwUzm     
vt.分析,解析 (=analyse)
参考例句:
  • We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
  • The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。
2 mythology I6zzV     
n.神话,神话学,神话集
参考例句:
  • In Greek mythology,Zeus was the ruler of Gods and men.在希腊神话中,宙斯是众神和人类的统治者。
  • He is the hero of Greek mythology.他是希腊民间传说中的英雄。
3 savings ZjbzGu     
n.存款,储蓄
参考例句:
  • I can't afford the vacation,for it would eat up my savings.我度不起假,那样会把我的积蓄用光的。
  • By this time he had used up all his savings.到这时,他的存款已全部用完。
4 subtitle asawn     
n.副题(书本中的),说明对白的字幕
参考例句:
  • His new book has a subtitle.他的新书有一个副标题。
  • Ah!I don't know why they don't subtitle these movies.唉!我不知道这些电影为什么不打字幕。
5 detector svnxk     
n.发觉者,探测器
参考例句:
  • The detector is housed in a streamlined cylindrical container.探测器安装在流线型圆柱形容器内。
  • Please walk through the metal detector.请走过金属检测器。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   美国有线新闻  CNN  英语听力
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴