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

时差N小时 圆周率的奥妙

时间:2021-04-15 09:18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)

D: 3.1415926535 . . .

Y: Don. Don?

D: What?

Y: What are you doing?

D: I was trying to break the record for memorizing pi. Now I'll have to start over.

Y: Memorize pi? Oh yeah, I remember that from 7th grade geometry. But how can you memorize pi? We usually abbreviate1 it as 3.14, but the numbers just keep going after the decimal point.

D: I'm trying to memorize as many numbers as I can. The record is 42,000 decimal places.

Y: Wow. You're really going to try to memorize that much? Why? What is pi, anyway.

D: It's only one of the most fascinating numbers in the history of mathematics. It sounds simple: Pi equals the circumference2 of a circle divided by its diameter. No matter how large or small the circle, the ratio always equals pi.

Y: That's interesting.

D: Yes, and it has been for over 4000 years. The Babylonians were the first to approximate pi, and ever since, mathematicians3 have come up with ways of figuring it more accurately4. In modern times we've used supercomputers to calculate pi to billions of decimal places.

Y: That's really something. But what's all the excitement about? I mean, what is pi used for?

D: It's used to measure the length of arcs and other curves and to determine the area of sectors5 and other curves. It's also used to measure the volume of solids. For instance, if you're a rocket scientist trying to calculate the fuel capacity of a cylindrical6 fuel tank, pi's your guy.

Y: Cool.

D: Now, if you'll excuse me, I've got a record to break.

Y: Good luck.

D: 3.1415 9265 3589 7932 3846 . . .

D: 3.1415926535 . . .

Y: Don. Don?

D: 什么事?

Y: 你在干吗?

D: 我正努力背圆周率来打破纪录。现在我必须重新开始。

Y: 背圆周率?我记得在7年级学几何时背的。你是如何背的?我们通常缩进至3.14,但是小数点后还有很多数。

D: 我正努力尽量多背些。纪录是背到小数点后第42,000位。

Y: 你真准备背那么多?为什么?到底什么是圆周率。

D: 圆周率是数学史上最吸引人的数字。它听起来很简单,圆的直径除以周长就等于圆周率。无论圆多大或多小,结果都是一样的。

Y: 很有意思。

D: 圆周率已经有4千年历史了啦。巴比伦人首个得到的数字接近圆周率,从那以后,数学家用各种方法来准确计算。现在我们用超级计算机来计算元中旅到小数点上亿后。

Y: 真有意思。有什么值得高兴的?圆周率用来干什么?

D:用来计算弓形和各种曲线的长度来决定扇形的面试和其他曲线。圆周率也用来测量固体的体积。比如,如果你是火箭专家,正准备计算圆柱形燃料容器的燃料体积,就得用到圆周率。

D: 酷。

Y:打不起,我得准备打破记录了。

D: 好运。

Y:3.1415 9265 3589 7932 3846 . . .


点击收听单词发音收听单词发音  

1 abbreviate nytz9     
v.缩写,使...简略,缩短
参考例句:
  • She had lost the power to abbreviate the remaining steps of the way.她丧失了缩短这最后几步路的能力。
  • It is seldom acceptable to abbreviate words in formal writing.在正式的书面语中使用缩写语通常是不能接受的。
2 circumference HOszh     
n.圆周,周长,圆周线
参考例句:
  • It's a mile round the circumference of the field.运动场周长一英里。
  • The diameter and the circumference of a circle correlate.圆的直径与圆周有相互关系。
3 mathematicians bca28c194cb123ba0303d3afafc32cb4     
数学家( mathematician的名词复数 )
参考例句:
  • Do you suppose our mathematicians are unequal to that? 你以为我们的数学家做不到这一点吗? 来自英汉文学
  • Mathematicians can solve problems with two variables. 数学家们可以用两个变数来解决问题。 来自哲学部分
4 accurately oJHyf     
adv.准确地,精确地
参考例句:
  • It is hard to hit the ball accurately.准确地击中球很难。
  • Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。
5 sectors 218ffb34fa5fb6bc1691e90cd45ad627     
n.部门( sector的名词复数 );领域;防御地区;扇形
参考例句:
  • Berlin was divided into four sectors after the war. 战后柏林分成了4 个区。 来自《简明英汉词典》
  • Industry and agriculture are the two important sectors of the national economy. 工业和农业是国民经济的两个重要部门。 来自《现代汉英综合大词典》
6 cylindrical CnMza     
adj.圆筒形的
参考例句:
  • huge cylindrical gas tanks 巨大的圆柱形贮气罐
  • Beer cans are cylindrical. 啤酒罐子是圆筒形的。
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----------------------------
TAG标签:   时差N小时
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