恒速万向节
等速万向节

万花筒 2008-06-10&-06-11

Countdown to the Olympics,the Beijing Zoo introduces eight Olympic pandas that will be on display through this summer's games.Visitors waited in long lines to buy tickets to the renovated panda hall at the zoo where the animals will be held in a newl

发表于:2018-12-11 / 阅读(154) / 评论(0)

万花筒2008年

TED演讲:如何把熟蛋变生(2)

Here's the key part. 接下来是关键的部分。 The solution nearest the wall spins faster than the solution closer to the middle. 离试管壁最近的溶液，要比中间的溶液旋转得更快。 That difference in velocity creates sheer str

发表于:2018-12-18 / 阅读(133) / 评论(0)

TED演讲教育篇

英语分类词汇：光驱

BCF(Boot Catalog File，启动目录文件) BIF(Boot Image File，启动映像文件) CDR(CD Recordable，可记录光盘) CD-ROM/XA(CD-ROM extended Architecture，唯读光盘增强形架构) CDRW(CD-Rewritable，可重复刻录光盘) CLV(Constant

发表于:2018-12-18 / 阅读(233) / 评论(0)

英文语法词汇

赖世雄英语新闻听力通第74期:震撼NBA的总决赛

(LOS ANGELES, AP) Allen Iverson shook up the NBA Finals when he scored 48 points in the opener of the series. （美联社洛杉矶电）亚伦.艾佛森在NBA联赛的第一场比赛攻下48分，震撼NBA的总决赛。 The Philadelphia 76ers stunn

发表于:2018-12-28 / 阅读(135) / 评论(0)

赖世雄英语新闻听力通

北师大初中英语七年级下--Expansion 9-2

[00:00.00]7 Dear Meg, [00:08.52]I have constant stomach problems. [00:11.48]What can I do to get better? [00:14.12]Frank [00:16.01]Dear Frank, [00:17.46]First of all, [00:18.65]you should see a doctor. [00:20.43]Don't eat junk food. [00:22.38]You sho

发表于:2018-12-29 / 阅读(217) / 评论(0)

北师大版初中英语七年级下

60秒科学:Running Shoes Jog Joints

Running Shoes Jog Joints In a study in the Journal of Injury, Function and Rehabilitation, researchers found that running shoes protected the feet, but at the expense of hips, knees and ankles. Molly Webster reports Your feet may love running shoes.

发表于:2019-01-02 / 阅读(193) / 评论(0)

60秒科学

篮球术语：助攻和篮板球

看到助攻，千万不要受汉语思维影响。助攻很简单，一点都不复杂，不信？看外电一段有关小巨人姚明缺席NBA全明星赛的相关报道： NBA Houston Rockets center Yao Ming will not play in next month's National

发表于:2019-01-03 / 阅读(119) / 评论(0)

奥运英语

SSS 2009-04-15

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. It's April 15th. Like many people around the country, you might be feeling your blood pressure rise as you deal with everyone's favorite activityfiling

发表于:2019-01-08 / 阅读(172) / 评论(0)

Scientific American(四)月

SSS 2009-06-15

This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Could it be that our understanding of rain was all wet? A new study says that some drops of rain are falling faster than they should be. Which ultimately means that it m

发表于:2019-01-08 / 阅读(179) / 评论(0)

Scientific American(六)月

英文摇滚歌曲：As I Lay Dying - The Only Constant Is Change

The only constant is change The only constant is change, go The human heart is born without legs Sliding back and forth And never once does it truly rest Unless accompanied by death Sliding back and forth Even the strongest Remnants of history They h

发表于:2019-01-10 / 阅读(177) / 评论(0)

英文摇滚歌曲

VOA标准英语2010年-Regrowing Worn Joints Using Patient St

Various stages of cartilage growth on scaffold. The final image on the right shows naturally forming cartilage for comparison. These replacement joints can be made of combinations of metal alloys, plastic and ceramic, but new research shows that it m

发表于:2019-01-13 / 阅读(179) / 评论(0)

VOA标准英语2010年(八)月

VOA标准英语2011--Osteoporosis Drug Might Repair Joints Da

Osteoporosis Drug Might Repair Joints Damaged by Arthritis A medication that builds bone mass in patients with osteoporosis might actually help repair damaged joints and could be used to treat people suffering from arthritis, according to University

发表于:2019-01-13 / 阅读(129) / 评论(0)

VOA标准英语2011年(九月)

美国国家公共电台 NPR 6,000-Year-Old Knee Joints Suggest Osteoarthritis Isn't Just Wear And Tear

AILSA CHANG, HOST: When you get up in the morning, do you hear a snap, crackle, pop? We're not talking about cereal here. We are talking about your knees. Well, if you reach for the painkiller before that cup of coffee, you are in good company. There

发表于:2019-01-16 / 阅读(133) / 评论(0)

2017年NPR美国国家公共电台8月

TED演讲:探索世界最深洞穴(9)

We have to beat that. 我们必须克服它。 We can do it because in space there are no aerodynamics. 我们能够这样做是因为太空里没有空气阻力。 We can go and use inflatable systems for almost everything. 我们几乎总是能够使

发表于:2019-01-18 / 阅读(108) / 评论(0)

TED演讲商业篇

Clippers win over Pistons 129-97

LOS ANGELES, March 10 (Xinhua) -- Blake Griffin finished with 22 points and eight rebounds, Chris Paul contributed 20 points with 14 assists as the Los Angeles Clippers handed the Detroit Pistons 5th straight defeat 129-97 on Sunday. The 129 points w

发表于:2019-02-03 / 阅读(166) / 评论(0)

英语新闻

Philadelphia guard Richardson undergoes successful knee surgery

WASHINGTON, Feb. 19 (Xinhua) -- NBA's Philadelphia 76ers announced Tuesday that their guard Jason Richardson has undergone successful knee surgery. The 12-year NBA veteran, who has not played for a month and will be sidelined for the rest of the seas

发表于:2019-02-04 / 阅读(172) / 评论(0)

英语新闻

用英语如何描述市场行情

1．市况上扬: The market advances/ gains /rises. 2．市况下挫: The market declines /falls/loses. 3．市况活跃: The market booms. The market is excited. The market becomes active. The market becomes brisk. 4．市况暴跌停滞: The m

发表于:2019-02-06 / 阅读(141) / 评论(0)

天天商务口语

嫦娥5号探测器今年将带回月球土壤

China's unmanned lunar probe Chang'e-5, set to be launched around December 2017, will bring lunar soil samples back to Earth, says Wu Yanhua, deputy chief of the China National Space Administration. 国家航天局副局长吴艳华近日表示，我国

发表于:2019-02-07 / 阅读(99) / 评论(0)

英语新闻

万物简史第241期:马斯特-马克的夸克(13)

Hubble realized that this could be expressed with a simple equation, Ho = v/d (where Ho is the constant, v is the recessional velocity of a flying galaxy, andd its distance away from us). Ho has been known ever since as the Hubble constant and the wh

发表于:2019-02-17 / 阅读(107) / 评论(0)

万物简史

Varejao to miss up to two months

CLEVELAND, Jan. 9 (Xinhua) -- Cleveland Cavaliers' Brazilian center Anderson Varejao will be sidelined in the next two months after it was revealed he needs surgery on his right knee. Varejao suffered the injury during the Cavaliers' 113-99 defeat to

发表于:2019-02-18 / 阅读(179) / 评论(0)

英语新闻

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