un. 十亿分之几
[网络] 十亿分率范围内；十亿分之几数量级

UNIT 2 Plant a Plant! Lesson 10: Plant Parts

[ti:UNIT 2 Plant a Plant! Lesson 10: Plant Parts] [0:00.363]UNIT 2 第二单元 [0:02.105]Plant a Plant! 培育植物 [0:03.775]Lesson 10: 第10课： [0:05.444]Plant Parts 植物的组成部分 [0:07.100]THINK ABOUT IT! 想一想 [0:08.539]How many

发表于:2018-12-13 / 阅读(117) / 评论(0)

河北教育初中英语（初中起点）八年级下册

First Flight Completed of Plane with No Moving Parts

First Flight Completed of Plane with No Moving Parts Engineers say they have carried out the first-ever flight of an electric airplane with no moving parts. Researchers at the Massachusetts Institute of Technology, or MIT, recently shared video of th

发表于:2018-12-14 / 阅读(49) / 评论(0)

2018年VOA慢速英语(十一)月

Heat Wave Grips Parts of China

Local governments in many parts of eastern China are taking steps to try to conserve energy in the midst of the heat wave which has seen temperatures in many parts of the region top 40-degrees. CRI's Shen Chengcheng with more. Heat alerts have been i

发表于:2018-12-19 / 阅读(41) / 评论(0)

世界各地新闻集锦

公众人物毕业演讲第159期:比尔·奈马萨诸塞大学2014(6)

And by the time you all reach your billionth second here on earth when you're a little over six months into your 31st year 你们也会等到十亿位变动的那一刻到时你们大约是31岁半过一点 We will probably be over 9 billion and perh

发表于:2018-12-30 / 阅读(29) / 评论(0)

公众人物毕业演讲

VOA标准英语2009年-Haze Blankets Parts of Southeast Asia

Smoke from forest fires, largely in Indonesia, has shrouded parts of Southeast Asia in thick haze. It is a seasonal problem in the region that will not go away. Putrajaya's landmark Putra Mosque (l) and Prime Minister's building seen covered by haze

发表于:2019-01-14 / 阅读(42) / 评论(0)

VOA标准英语2009年(八月)

60秒科学:Tools Are Body Parts to Brain

Tools Are Body Parts to Brain In a report in the journal Current Biology, researchers claim that the brain interprets a tool, such as a hammer, as a temporary extension of your physical body. Karen Hopkin reports [The following is an exact transcrip

发表于:2019-01-30 / 阅读(85) / 评论(0)

60秒科学

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