射束分散,波束分散

不择手段背单词(733):beam横梁; 船幅; 船舷

beam, [bi:m] n 大梁（建筑中用作支撑的木材、金属或石头）；光柱；臀围；平衡木【船】横梁; 船幅; 船舷 (秤)杆; (犁)柄; (锄)把; 卷轴; 横杆; 杠杆 (鹿角的)主干 (灯光、日光、月光等的)束, 道,

发表于:2018-12-30 / 阅读(100) / 评论(0)

不择手段背单词

Louis Smith 体操运动员

Welcome to Talking Sport! Today we meet a male gymnast from the UK. Louis Smith is already an Olympian. Louis won a bronze medal in the Beijing Olympics for his performance on the pommel horse. He is hoping to win another medal at this year's Olympic

发表于:2019-01-05 / 阅读(77) / 评论(0)

伦敦谈体育

SSS 2009-07-02

This is Scientific American's 60-Second Science, I'm Christie Nicholson. Got a minute? If youve spoken to anyone in New York City, where Scientific Americans offices are, then youve heard about the rain, every day since mid-June. Still, were not in t

发表于:2019-01-08 / 阅读(103) / 评论(0)

Scientific American(七)月

美联社新闻一分钟 2007-08-12

1. Authorities in Utah say they found no signs of six trapped miners when they lowered a camera down to where they think the men are located. This is their second effort to make contact with the men. Yesterday a microphone was lowered down to a separ

发表于:2019-01-08 / 阅读(137) / 评论(0)

美联社新闻一分钟2007

高三词汇(单元) Unit8-13

[00:00.00]change one's mind anyhow argument misunderstanding [00:05.09]改变注意 ad.不管怎样 n.辩论 n.误会，误解 [00:10.19]ashamed Cincinnati counter disappointment [00:14.72]a.惭愧,害臊 n.辛辛那提(美国城市) n.柜台 n.失望；

发表于:2019-01-08 / 阅读(264) / 评论(0)

高中英语词汇

比蒙障碍 Beamonesque

Bob Beamon established himself as the favourite in the 1968 long jump by winning 22 of 23 meets in the pre-Olympic season. He almost met with disaster in the qualifying round. After fouling his first two attempts, he had only one try left. His teamma

发表于:2019-01-08 / 阅读(159) / 评论(0)

英美文化

VOA慢速英语 2008 1001b

This is the VOA Special English Health Report. Governments, businesses and other groups have promised to add three billion dollars to the fight against malaria. The promises came last week at a meeting at the United Nations in New York. The money wi

发表于:2019-01-11 / 阅读(103) / 评论(0)

VOA慢速英语2008（十）月

Lesson 16 - RIGHT ON THE BEAM / FLY BY THE SEAT OF ONE'S PAN

Right on the beam To fly by the seat of his pants 美国英语当中有许多成语和俗语都和过去的历史有关系。例如，美国开拓西部的过程给美国语言增添了不少色彩。可

发表于:2019-01-14 / 阅读(167) / 评论(0)

美国习惯用语

旅馆英语对话-The Minibar(1)

A: I'd like to order a restock on my minibar. B: You finished everything in there, sir? A: Absolutely everything. B: What would you like to order? A: Three bottles each of Perrier and Jim Beam. B: Uh-huh. What else do you want? A: The apples were gre

发表于:2019-01-15 / 阅读(114) / 评论(0)

英语情景对话-旅馆

旅馆英语对话-The Minibar(2)

A: I need my minibar restocked. B: Everything is gone, sir? A: There's not a drop left of anything. B: Is there anything in particular you'd like? A: Yes, the Perrier and the Jim Beam hit the spot. Let me have three more of each. B: Got it. Anything

发表于:2019-01-15 / 阅读(107) / 评论(0)

英语情景对话-旅馆

旅馆英语对话-The Minibar(3)

A: Hi. My minibar is empty. B: You already finished off everything, sir? A: I finished off everything. B: Would you like anything in particular? A: The Perrier and the Jim Beam. Let me have three more of each. B: Beam and Perrier. Anything else, sir?

发表于:2019-01-15 / 阅读(101) / 评论(0)

英语情景对话-旅馆

旅馆英语对话-The Minibar(4)

A: Hello! How do I restock my minibar? B: You've drunk everything, sir? A: I finished it all. B: Do you want the whole minibar, or just certain items? A: Send me up three bottles each of Perrier and Jim Beam. B: That's three Jim Beams and three Perri

发表于:2019-01-15 / 阅读(107) / 评论(0)

英语情景对话-旅馆

旅馆英语对话-The Minibar(5)

A: My minibar is completely empty. B: Everything in that minibar has been consumed, sir? A: Everything's gone. B: Is there anything special you'd like? A: Just bring me three bottles each of Jim Beam and Perrier. B: Okay, sir. Three of each. Would yo

发表于:2019-01-15 / 阅读(107) / 评论(0)

英语情景对话-旅馆

第305期:微笑的七个理由

smirk vi.傻笑; 假笑着说; grin v. 露齿而笑，咧着嘴笑 beam vi. 照射；堆满笑容 laugh v.哈哈大笑 register vt.表示，表达; （感情）流露; 如果单纯从中文的翻译还是很难深刻理解这几种笑的不同，可以

发表于:2019-01-17 / 阅读(70) / 评论(0)

卡卡课堂早餐英语

艾伦脱口秀第164期:学舞蹈专业

It's time to bring total strangers together in a game we're calling Walk the Plank. 该把陌生人们聚到一起了通过我们叫做走跳板的游戏 Alright let's find our contestants,Twitch you know who they are? - I do. 让我们的选手上台

发表于:2019-01-28 / 阅读(61) / 评论(0)

艾伦脱口秀

肯定句变否定句的基本方法

1. 动词be的否定式动词be根据不同的人称和时态可以有am, is, are, was, were等不同形式，可用作连系动词(表示是、在等)和助动词(用于构成进行时态和被动语态等)，但不管何种情况，构成否定式时

发表于:2019-02-02 / 阅读(58) / 评论(0)

实用英语

神应用让你看到对方点发送前输了什么

If you are someone who types a furious text message, only to reconsider and edit it before hitting send, you may be in trouble. The Beam Messenger app shows everything another person is typing in a text message as they type it. This means that if you

发表于:2019-02-06 / 阅读(67) / 评论(0)

阅读空间

你不得不知道的实用精彩习语

1.poker face 面无表情的人例如： I never know whether my boss likes my work or not -- he is a real poker face! 我从来也不知道我的老板到底喜不喜欢我的工作。他脸上可真是一点表情都没有。 2.The shoe is on the

发表于:2019-02-09 / 阅读(102) / 评论(0)

阅读空间

经济学人175:太空太阳能老兄传下来吧

Science and technology 科学技术 Solar power from space 太空太阳能 Beam it down, Scotty 老兄，传下来吧 Harvesting solar power in space, for use on Earth, comes a step closer to reality 在太空获取太阳能以供地球之用:梦想距

发表于:2019-02-16 / 阅读(95) / 评论(0)

经济学人科技系列

瑞士大型强子对撞机重启程序

Scientists with the European Organization for Nuclear Research, or CERN, have begun working again after a two-year hiatus. The Large Hadron Collider was shutdown in 2013 for a major refit. It's allowed for its power to be doubled, enabling scientists

发表于:2019-02-18 / 阅读(63) / 评论(0)

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aspirator vacuum pump

automatic space extension