螺纹标称直径;螺旋直径

有声英文阅读-月球

The Moon 月球 We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation

发表于:2018-12-05 / 阅读(72) / 评论(0)

有声英文阅读

双语有声阅读:The Moon 月球

The Moon We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation shows that the moon is not standing till. Its distance fr

发表于:2018-12-07 / 阅读(39) / 评论(0)

双语有声阅读

与美国小学生一起学英文第5册第26期:25分硬币

Quarter 25分硬币 A quarter is an American or Canadian coin. quarter是指美国或加拿大的一种硬币。 How much is a quarter? 这种硬币值多少钱呢？ A quarter is equal to 25 cents. 它等价于25分。 It is worth one fourth of a do

发表于:2018-12-13 / 阅读(55) / 评论(0)

与美国小学生一起学英文第5册

【一起听英语】爬树（2）

围绕树木展开的话题.... Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme, Im joined by Kate. OK Kate, well last week we were talking about tree climbing,

发表于:2018-12-27 / 阅读(48) / 评论(0)

一起听英语

【突破英文词汇】circum -- round 周围

1. circumference /səˈkʌmfərəns/ -- distance around a circle or rounded body; perimeter The circumference of a circle equals times the diameter. 圆周长等于与直径的乘积。 2. circumlocution /ˌsɜ:kəmləʊˈkju:ʃən/ -- roundabout way

发表于:2018-12-30 / 阅读(82) / 评论(0)

突破英文词汇

CNN 2010-10-12

Hi, I'm Carl Azuz. Welcome to this Columbus Day edition of CNN Student News! We'll be talking more about Columbus Day in just a couple minutes. But first, we're reporting on a breakthrough in Chile. And we mean that literally. A hole big enough to re

发表于:2019-01-08 / 阅读(75) / 评论(0)

CNN2010年(十)月

美国俚语： screw around 胡闹; 不作正经事

A: Quit screwing around and work on your paper, Max! A: Max, 不要胡闹了, 作你的报告去吧! B: I don\'t want to. How can I write about something I never read? B: 我不想啊。要我怎么样写我都没读过的东西嘛? 你有没有发现

发表于:2019-01-08 / 阅读(84) / 评论(0)

美国俚语

美国俚语：screw around with someone 招惹某人; 对某人态度随便

A: A piece of advice. Don\'t screw around with her. She\'s got a terrible temper. A: (给你)一个忠告, 别跟她乱来, 她的脾气可坏得很! B: She does? But she looks like a sweet little angel. B: 是吗? 但是她看起来像个可爱善良的

发表于:2019-01-08 / 阅读(96) / 评论(0)

美国俚语

与美国小学生一起学英文第9册第25期:直径

Diameter 直径 A diameter is a straight line inside a circle. 直径是圆内的直线。 Can any straight line in a circle be a diameter? 圆内的任何直线都是直径吗？ No, its two ends must meet at two different points on the circle. 不是

发表于:2019-01-10 / 阅读(51) / 评论(0)

与美国小学生一起学英文第9册

与美国小学生一起学英文第5册第1期:沙子

Sand 沙子 If you look around you, you can find sand very easily. 你若环顾四周，就很容易发现沙子。 Sand comes from rocks. 沙子源自岩石。 Each grain of sand is less than 2 millimeters in diameter. 每粒沙子的直径小于两毫

发表于:2019-01-10 / 阅读(77) / 评论(0)

与美国小学生一起学英文第5册

职业技术英语口语第24期:工具和设备在库房

In the storeroom 在库房 A:Where can I find a spare hose for the pump? A:我在哪里可以找到一跟备用的机泵软管？ B:What size do you need? B:你需要什么型号的？ A: 25 mm diameter. A:直径25毫米的。 B:They're at the back o

发表于:2019-01-14 / 阅读(79) / 评论(0)

职业技术英语口语

购物英语对话-Buying a Pan(1)

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O

发表于:2019-01-20 / 阅读(119) / 评论(0)

购物英语对话

【购物】买平底锅-Buying a Pan

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A:I like that one, but it's too heavy. B: Okay, try this one. It's made of aluminum. A: This is muc

发表于:2019-01-21 / 阅读(94) / 评论(0)

购物-Shopping

Lesson 127 - NOT ALL THERE / HAVE A SCREW LOOSE

not all there to have a screw loose 我们经常会发现有的人似乎脑子不太正常。也许是因为现代生活过于紧张，美国是有不少精神不正常的人。据说，美国人在口语

发表于:2019-02-01 / 阅读(140) / 评论(0)

美国习惯用语

Tree climbing: Part 2

Tree climbing: Part 2 NB: This is not an accurate word-for-word transcript Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme（节目,计划）, Im joined by Kate.

发表于:2019-02-05 / 阅读(94) / 评论(0)

六分钟英语

美国俚语:"弄乱,搞砸" screw up

解释： 1，弄糟，弄乱，搞砸(to mess up ) 例句： I hope I don't screw up this time. 我希望这次不会搞砸了。 Try again and don't screw it up this time. 再试一次，这次别搞砸了。 2，如果是screw up somebody 或者sc

发表于:2019-02-09 / 阅读(90) / 评论(0)

美国俚语

美国俚语:弄乱,搞砸 screw up

screw up 的常见意思及用法 1.弄糟，弄乱，搞砸(to mess up) 例句： I hope I don't screw up this time. 我希望这次不会搞砸了。 Try again and don't screw it up this time. 再试一次，这次别搞砸了。 2.如果是screw u

发表于:2019-02-09 / 阅读(90) / 评论(0)

美国俚语

辛沛沛NO-BOOK 辛沛沛口语提高版下册B Lesson 14 Screw

Lesson 14 Screw 1.You can't screw up this time. 2.You got screwed again this time? 3.I'm not for sale.Screw your money! 4.You screw with me and you'll be sorry. 5.Stop screwing off in school. 6.That crook screwed me out of ￥10. 7.The guy must have

发表于:2019-02-12 / 阅读(197) / 评论(0)

辛沛沛NO-BOOK 辛沛沛口语提高版

新西兰英语 508 Bad weather in Tauranga again

Bad weather meant that oil could not be pumped out of the ship the Rena today. The waves were too high. Pumping the oil is slow work because the oil is cold and thick. The pipe from the Rena to the oil barge is nearly 200m long and quite narrow, 7.5c

发表于:2019-02-17 / 阅读(43) / 评论(0)

新西兰英语

万物简史第351期:孤独的行星(16)

Apart from much else, our lively interior created the outgassing that helped to build an atmosphere 不说别的，我们活跃的内部使大量气体喷涌而出，帮助建立了大气层， and provided us with the magnetic field that shields us

发表于:2019-02-25 / 阅读(41) / 评论(0)

万物简史

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学英语单词

ASC (automatic sequence control)

bentched

Bonaparte, Mount