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

【英语时差8,16】长久等待

时间:2015-12-07 07:16来源:互联网 提供网友:yajing   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)

 A long wait, on this Moment of Science.   You might have heard the old adage1 that glass is a liquid, and if you go over to Europe and look at the stained glass windows in the cathedrals, you'll find them thicker on the bottom than the top because they are gradually spilling out. Is this true?

Before we answer that one, let's take a second to think about what a cool image that is. Maybe if you lived for centuries instead of years, you could sit around and watch glass pour the way we watch molasses ooze2 out of a jar.
Well, sometimes little factoids like this get passed around that may or may not be accurate. So, to set the record straight, glass is indeed a very slow-moving liquid -- yep! -- given the standard definition of a liquid, which is something that takes the shape of its container. If you could wait a really, really long time, you might be able to watch a seemingly-solid piece of glass do this.
But it would take a lot more than a few centuries. In fact, a recent study by Edgar Zanotto in the American Journal of Physics showed that the amount of time you'd have to wait to see glass change its shape with the naked eye would be longer than the age of the universe! Those cathedral windows are probably thicker in some places just because of the crude methods used to form them.
So, yes, technically3 glass is a liquid, but no, you can't ever see it move. Unless you have a few billion years to kill.  

点击收听单词发音收听单词发音  

1 adage koSyd     
n.格言,古训
参考例句:
  • But the old adage that men grow into office has not proved true in my experience.但是,根据我的经验,人们所谓的工作岗位造就人材这句古话并不正确。
  • Her experience lends credence to the adage " We live and learn!"她的经验印证了一句格言: 活到老,学到老!
2 ooze 7v2y3     
n.软泥,渗出物;vi.渗出,泄漏;vt.慢慢渗出,流露
参考例句:
  • Soon layer of oceanic ooze began to accumulate above the old hard layer.不久后海洋软泥层开始在老的硬地层上堆积。
  • Drip or ooze systems are common for pot watering.滴灌和渗灌系统一般也用于盆栽灌水。
3 technically wqYwV     
adv.专门地,技术上地
参考例句:
  • Technically it is the most advanced equipment ever.从技术上说,这是最先进的设备。
  • The tomato is technically a fruit,although it is eaten as a vegetable.严格地说,西红柿是一种水果,尽管它是当作蔬菜吃的。
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----------------------------
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