[机] 蜗杆分度圆直径

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(160) / 评论(0)

有声英文阅读

TOP50 初级英文绘本 48 Diary of a Worm

OliverJeffers生在澳大利亚西部，但成长于北爱尔兰的贝尔法斯特，现在纽约。是个插画师，也是个作家。从 2004 年至今，他在动画界获奖无数。他的画充满童真，有点淡淡的忧伤，但又有浓烈的

发表于:2018-12-06 / 阅读(161) / 评论(0)

TOP50 初级英文绘本

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(129) / 评论(0)

与美国小学生一起学英文第5册

英语口语1+1:The early bird catches the worm

发表于:2018-12-24 / 阅读(186) / 评论(0)

英语口语1+1

Eztalk美语【77】Winter Worm Summer Grass 冬虫夏草

BB starts adding herbs into the batch Robert: What are those things you're putting in there? They look like little worms! BB: Actually, it's a kind of fungus... Robert: Fungus? I'm supposed to eat fungus? BB: Sure...It's called Winter Worm Summer Gra

发表于:2018-12-25 / 阅读(129) / 评论(0)

Eztalk美语会话

【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(131) / 评论(0)

一起听英语

儿童英语小故事 23. She Sees a Worm

The worm crawls on the ground. It crawls slowly. She watches it. She picks it up. It wiggles in her hand. She puts it in her mouth. It wiggles in her mouth. She takes it out of her mouth. She puts it back on the ground. It crawls into a hole.

发表于:2018-12-31 / 阅读(261) / 评论(0)

儿童英语小故事

地道英语在线听-Worm 一种电脑病毒

A computer worm is bad news Helen: Hello welcome to Real English from BBC Learning English. I'm Helen. Zo: 大家好，我是刘佳。 Helen: Today we're going to look at words and phrases that have recently become part of the English language. Zo: 地道英语

发表于:2019-01-02 / 阅读(182) / 评论(0)

地道英语在线听

Scientists Discover Fossil of Strange Sea Worm

Scientists found a prehistoric ancestor of an arrow worm among a group of fossils at two national parks in Canada. The fossils were found in what is now British Columbia, but was once an ocean. The sea worm was 10 centimeters long and had 50 spines o

发表于:2019-01-02 / 阅读(160) / 评论(0)

2017年VOA慢速英语(八)月

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(156) / 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(151) / 评论(0)

职业技术英语口语

美国国家公共电台 NPR Why The World Isn't Close To Eradicating Guinea Worm

Why The World Isn't Close To Eradicating Guinea Worm ARI SHAPIRO, HOST: For the past few years, the world has been on the edge of one of the biggest medical triumphs of modern history. A global effort has nearly wiped out the Guinea worm, a horrific

发表于:2019-01-17 / 阅读(187) / 评论(0)

2016年NPR美国国家公共电台8月

英语听力—环球英语 1256 Ending Guinea Worm Disease

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 Hyacinth Igelle is a farmer. He liv

发表于:2019-01-19 / 阅读(103) / 评论(0)

环球英语 Spotlight

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(190) / 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(173) / 评论(0)

购物-Shopping

VOA常速英语2008年-Guinea Worm Eradication Target Set for 2009

By Gilbert da Costa Abuja 04 April 2008 The global campaign to eradicate the debilitating Guinea worm disease continues, with hopes for eliminating it by 2009. Four countries ended transmission of the disease in 2007. Gilbert da Costa attended a cere

发表于:2019-02-04 / 阅读(165) / 评论(0)

VOA常速英语2008年（四月）

学个词Learn a Word 第693期 Worm

今天我们要学的词是worm。 Worm, 是虫子的意思，用在电脑上，指的就是蠕虫病毒。四月一号愚人节，也是一种恶性电脑蠕虫病毒发作的日子。 Computer experts are watching warily as the Conficker worm strik

发表于:2019-02-05 / 阅读(149) / 评论(0)

英语单词荟萃

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(171) / 评论(0)

六分钟英语

环球英语 — 128：Stopping Guinea Worm Disease

Voice 1 Thank you for joining us for todays Spotlight. Im Rebekah Schipper Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 1 Hyaci

发表于:2019-02-14 / 阅读(131) / 评论(0)

环球英语 Spotlight

第423期:什么是"Earworm"原来我们每个人都有

相信我们每个人都有被神曲洗脑的经历，这种感觉就是我们的大脑中总是不自觉的会响起一阵阵旋律，完全不受自我意识的控制。英文中有一个非常有意思的单词：earworm,直译过来就是耳朵虫。

发表于:2019-03-02 / 阅读(237) / 评论(0)

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学英语单词

a person of few words

barnes weighting function

bass-heavy

bearing seating

bell type chest piece

bombastic

brouilly