反转粒子数密度

SSS 2011-05-30

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Do you come from a country that has, let's say, a history of environmental disasters or conquests? Then your culture is probably tightit has strong soc

发表于:2018-12-24 / 阅读(62) / 评论(0)

Scientific American(五)月

英语作文四、六级考试万能作文 4Band6january

[00:00.00]How to solve the Problem of Heavy Traff [00:04.68]With the development of industry and the growth of population,heavy traffic has become a serious problem in citie [00:14.16]Large numbers of bikes,motorcycles,cars and buses are making the s

发表于:2018-12-30 / 阅读(48) / 评论(0)

英语六级听力练习集锦

托福听力短文 I-10-3

(woman) To us, the environment in which fish dwell often seems cold, dark, and mysterious. But there are advantages to living in water, and they have played an important role in making fish what they are. One is that water isn't subject to sudden te

发表于:2018-12-30 / 阅读(111) / 评论(0)

托福听力短文

大学英语四级词汇 021

delicate a.巧妙的，优雅的；精致的，微妙的 delicious a.美味可口的；芬芳的；有趣味的，妙的 delight n.欣喜，愉快；嗜好 vt.(使)喜悦 deliver vt.救出；投递 delivery n.投递，送交；交付，交货；分娩

发表于:2018-12-30 / 阅读(103) / 评论(0)

大学英语四级词汇拼读版

9-14 用于探索太空的发明：人造卫星

Inventions for Exploring Space: Artificial Satellites Sputnik Ⅰ was the first artificial satellite. It can be described as an aluminium 1 sphere with a diameter 2 of 58 centimetres and weighing 83.6

发表于:2018-12-30 / 阅读(77) / 评论(0)

英语沙龙2004全年合辑下

幽默笑话:学地理

幽默笑话:学地理 Misha is a pupil in Grade 5 and has just begun studying geography. One day after supper, Misha's father asked Do you like geography，Misha? 米沙是小学五年级的学生，刚开始学地理。一天晚饭后，他爸爸问他

发表于:2019-01-03 / 阅读(50) / 评论(0)

趣味英语

2006年VOA标准英语-World Population Growth to be Concentrated

By Michael Bowman Washington 07 March 2006 view Global Population report By 2050, world population is projected to reach nine billion people. That would constitute a 38 percent jump from today's popul

发表于:2019-01-06 / 阅读(138) / 评论(0)

2006年VOA标准英语（三月）

SSS 2011-11-16

Ever wander through a supermarket and past the open refrigerated cases that house cream cheese, butter and OJ? The refrigerated shelves are protected by jets of air that blow across the front. These jets form an air shield to keep the warm air out. T

发表于:2019-01-08 / 阅读(148) / 评论(0)

Scientific American(十一)月

电信类英语词汇表大全-2

中文英文缩写 * （符） star (symbol) [美国]电气和电子工程师学会 Institute for Electrical and Electronic Engineers IEEE “请发码”信号

发表于:2019-01-08 / 阅读(157) / 评论(0)

电信英语

雅思阅读中的文法结构剖析

1. The work that Tim Pons and his colleagues published last week is basic research into the portion of the brain, the cortex, that one scientist says is responsible for all the interesting things we do. 剖析：在这个长句中, 共有两个定语从

发表于:2019-01-17 / 阅读(111) / 评论(0)

雅思英语

英语词汇分类：家庭计划

population studies 人口研究 demography 人口学 demographer 人口学家 population theory 人口理论 Malthusianism 马尔萨斯主义 neo-Malthusianism 新马尔萨斯主义 overpopulation 人口

发表于:2019-02-02 / 阅读(54) / 评论(0)

英文语法词汇

World Population Day（世界人口日）

2004 marks the 10th anniversary of the groundbreaking International Conference on Population and Development (ICPD) in Cairo, Egypt, in 1994. Ten years ago, on the eve of World Population Day, a new campaign was launched to raise awareness of how int

发表于:2019-02-03 / 阅读(90) / 评论(0)

阅读空间

Beijing unveils new steps to curb air pollution

BEIJING, Jan. 22 (Xinhua) -- Beijing will strengthen its efforts to treat PM2.5 and slash the density of major air pollutants by 2 percent this year, the municipality's acting mayor said Tuesday. The capital will take 180,000 old vehicles off the roa

发表于:2019-02-04 / 阅读(76) / 评论(0)

英语新闻

设计师为你讲述Gmail的新界面

Hi my name is Jason Cornwell . I'm user experience designer at Gmail. We have been hardworked to update Gmail with a new look.I'm excited to share with you some of the biggest improvements. 大家好我是Gmail的用户体验设计师Jason Carmel。经

发表于:2019-02-05 / 阅读(63) / 评论(0)

英语万花筒

9个看似谎言的事实：你信吗？反正我信了

The old adage that there are lies, damned lies, and statistics is, funnily enough, rather hard to find an original source for. 俗语有云：世上有三种谎言：谎言，该死的谎言，以及统计数据。但有趣的是，很难找到这句话

发表于:2019-02-05 / 阅读(67) / 评论(0)

阅读空间

华为年终机皇Nexus 6P于西班牙正式发布

Chinese telecommunications giant Huawei launched its new Nexus 6P smartphone in Spain on Tuesday. 中国电信巨头华为于本周二在西班牙正式发布新版旗舰智能手机Nexus 6P。 The phone, which was unveiled in October, will be availa

发表于:2019-02-08 / 阅读(59) / 评论(0)

英语新闻

北京市计划将雾霾纳入气象灾害种类

Beijing is considering listing smog as a meteorological disaster, but the move has been questioned. 北京正考虑将霾列为气象灾害，但此举引发了质疑。 The legal committee of the Beijing Municipal People's Congress started work on t

发表于:2019-02-08 / 阅读(89) / 评论(0)

英语新闻

中国领跑金砖国家和新兴经济体大学排行榜

Times Higher Education (THE) last Wednesday reveals its BRICS And Emerging Economies University Rankings 2017. 《泰晤士报高等教育》（THE）于上周三公布了2017年《金砖国家和新兴经济体大学排名》。 China's institutions

发表于:2019-02-18 / 阅读(101) / 评论(0)

英语新闻

Multiple quakes hit SW China, killing 64

Multiple quakes hit SW China, killing 64 ZHAOTONG, Yunnan, Sept. 7 (Xinhua) -- Sixty-four people have been confirmed dead and 715 others injured after multiple earthquakes struck a mountainous region in southwest China on Friday, authorities said. A

发表于:2019-02-19 / 阅读(187) / 评论(0)

英语新闻

经济学人294:城市土地空间和都市

Urban land 城市土地 Space and the city 空间和都市 Poor land use in the world's greatest cities carries a huge cost 糟糕的土地利用方式已经成为世界大都市不能承受之重 BUY land, advised Mark Twain; they're not making it a

发表于:2019-02-24 / 阅读(75) / 评论(0)

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