单词：maximum allowable concentration (mac)
单词：maximum allowable concentration (mac) 相关文章
McDonalds is celebrating the 50th anniversary of its world famous Big Mac. The Big Mac has been one of the most popular and best-selling items in the companys history. It is known for being bigger than a usual hamburger, with two pieces of meat separ
2018年VOA慢速英语(八)月
rhiannon rings like a bell thru the night and wouldn't you love to love her? she rules her life like a bird in flight and who will be her lover? all your life you've never seen a woman - taken by the wind would you stay if she promised you heaven? wi
好听的英文歌曲
STEVE EMBER: Im Steve Ember. SHIRLEY GRIFFITH: And Im Shirley Griffith with EXPLORATIONS in VOA Special English. Today we travel to India by way of the John F. Kennedy Center for the Performing Arts in Washington, D.C. This cultural organization is c
2011年VOA慢速英语(三)月
Psychologically defined, concentration is the process of centering one's attention over a period of time. In practical application, however, concentration is not as simple to deal successfully with as the definition may imply. For this reason, it is
双语有声阅读
Yep, yep, yep, yuh, yuh, yuh 耶 I don't got a reason to lie 我没有理由撒谎 They gave me the key to the sky 尽管他们给我成功的秘诀 But I'd rather open my eyes 但我更愿意只睁开双眼 'Cause that's what'll keep me alive 因为这
听歌学英语
By Melinda Smith Washington 10 July 2007 A recent study in the Journal of the American Medical Association shows that older people who carry certain genes are more susceptible to a loss of their central vision. That loss of sight is an advanced form
2007年VOA标准英语（七月）
Siri Comes to Mac Computers Earlier this month, Apple announced new technology at its yearly Worldwide Developers Conference (WWDC). In the last Personal Technology report, we talked about the changes to Apples iPhone and iPad operating system. Today
2016年VOA慢速英语(七)月
Jobs asserted his control of the group by canceling a brown-bag lunch seminar that Raskin was scheduled to give to the whole company in February 1981. 拉斯金原定于1981年2月要主持一场全公司范围的自带午餐的研讨会，但乔布斯
乔布斯传
Raskin's former student Bill Atkinson sided with Jobs. 拉斯金以前的学生比尔阿特金森这次站到了乔布斯的阵营中。 They both wanted a powerful processor that could support whizzier graphics and the use of a mouse. 他和乔布斯都
乔布斯传
Thus they were destined to clash, especially after Jobs was ejected from the Lisa project in September 1980 and began casting around for someplace else to make his mark. 因此，他们两人之间注定会有冲突，尤其是乔布斯在1980年9月被
乔布斯传
Throughout 1979 and early 1980 the Macintosh project led a tenuous existence. 从1979年到1980年初，麦金塔项目一直处于奄奄一息的状态。 Every few months it would almost get killed off, but each time Raskin managed to cajole Markku
乔布斯传
Jef Raskin's Baby 杰夫拉斯金的宝贝 Jef Raskin was the type of character who could enthrall Steve Jobsor annoy him. As it turned out, he did both. 杰夫拉斯金是那种能让史蒂夫乔布斯着迷--或者是厌烦的人。事实证明，两
乔布斯传
It was now lunch time and they were all sitting under the double green fly of the dining tent pretending that nothing had happened. 'Will you have lime juice or lemon squash?' Macomber asked. 'I'll have a gimlet,' Robert Wilson told him. 'I'll have a
英文短篇小说
Kongoni, the old gun-bearer, in the lead watching the blood spoor, Wilson watching the grass for any movement, his big gun ready, the second gun-bearer looking ahead and listening, Macomber close to Wilson, his rifle cocked, they had just moved into
英文短篇小说
HEALTH REPORT - Progression of Age-Related Macular Degeneration By Nancy Steinbach Broadcast: Wednesday, January 28, 2004 This is Phoebe Zimmermann with the VOA Special English Health Report. American
健康与经济
air passenger departure tax 飞机乘客离境税 Air Services Negotiations Unit [Economic Services Bureau] 民航运输谈判组〔经济局〕 airport tax 机场税 alcohol duty 酒精税 alienation
财会英语
American architectural photographer presents a new collection of images that give a glimpse into Incan genius for integrating architecture and nature Faiza Elmasry | Washington, DC 14 December 2009 Watch: Elmasry report voiced by Deborah Block Window
VOA标准英语2009年(十二月)
BEIJING, Dec. 2 (Xinhua) -- Three-time NBA All-star Gilbert Arenas missed a head-to-head clash with seven-time All-star Tracy Mcgrady in the fourth round of the Chinese Basketball Association (CBA) league on Sunday. Arenas was benched for groin strai
英语新闻
Stewart Mac: I Love You 这首歌是史蒂麦可翻唱了RB天王陶喆的《爱很简单》，选自他在2010年初通过金牌大风在大陆和港台发行的最新专辑《I Love You 我爱你》。专辑用这首歌做主打是希望能够通过此
天籁音乐
MILAN, Jan. 12 (Xinhua) -- Inter Milan head coach Andrea Stramaccioni said his side are rediscovering their balance following their 2-0 victory over Pescara in the Italian Serie A league at home on Saturday. It went well, because the most important t
英语新闻