un. 实际滤波效能
[网络] 实际滤波效率

2017年CRI Beijing to pilot air purifiers in schools, kindergartens

Beijing will launch a pilot program to equip schools and kindergartens with air filtration devices. Smog has been a significant issue in the Chinese capital this winter. I was coughing just now, I always wear mask, from school to home. The air is cho

发表于:2018-12-02 / 阅读(215) / 评论(0)

2017CRI中国国际广播电台

睡眠好记忆好

Studying for a big exam at school or a presentation at work, but don't forget to get a good night's sleep. Brain scientists report more evidence this week that sleep can improve your memory. Researche

发表于:2018-12-11 / 阅读(186) / 评论(0)

万花筒2006年

趣味青春英语第149期:On hold

Idiom: On hold 暂时不做，搁置一段时间 Hit the book: Remote Grid Incentive Apart from Drawback Efficiency Equator Tilt

发表于:2018-12-27 / 阅读(252) / 评论(0)

趣味青春英语

2013年ESL之餐饮娱乐 03 Playing a Practical Joke

Playing a Practical Joke Patricia: What are you doing? Luis: Im setting up a practical joke for Bobby. I cant wait to see the look on his face when he walks outside and finds his bike in pieces. Itll be the best prank ever! Patricia: Youre not really

发表于:2018-12-27 / 阅读(194) / 评论(0)

2013年ESL之餐饮娱乐

北师大版高中英语模块3--Unit 9 Wheels 1

[00:03.31]Unit 9 Wheels Culture Corner [00:06.46]America on the wheel [00:09.00]Although the motor car was invented in 1889 [00:12.43]by a German man called Gottlieb Daimler, [00:15.48]it was an American man called Henry Ford [00:18.57]who created th

发表于:2018-12-29 / 阅读(269) / 评论(0)

北师大版高中英语模块3

大学英语四级词汇 025

eat v.吃 echo n./v.回声，回响；共鸣 economic a.经济学的，经济(上)的 economical a.节省的；经济学的 economy n.经济；节约 edge n.边，边缘；刀口，刃 edit vt.编辑 edition n.版，版本 editor n.编者，编辑 ed

发表于:2018-12-30 / 阅读(209) / 评论(0)

大学英语四级词汇拼读版

多功能英语阅读33 The Best Practical Joke I Ever Saw

The Best Practical Joke I Ever Saw I've never been much for playing practical jokes on people, nor have Ibeen on the receiving end very often. The biggest practical joke Iever played on anyone was on April Fools Day ... I had our secretaryleave a pho

发表于:2019-01-02 / 阅读(217) / 评论(0)

多功能英语阅读

六级词汇与结构练习（23）

坚持不懈，直到成功。我们每天的奋斗就像对参天大树的一次砍击，头几刀可能了无痕迹。每一击看似微不足道，然而，累积起来，巨树终会倒下。这恰

发表于:2019-01-03 / 阅读(255) / 评论(0)

四六级词汇与结构练习

64.It's a Puzzlement

The fine-furniture store where I work has been in business since the 1920s.Recently I received a call from a woman who wanted to replace some chairs from a dining set purchased from us in the 1930s.I

发表于:2019-01-03 / 阅读(178) / 评论(0)

英汉幽默故事选读

SSS 2011-08-17

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? When a healthy rat smells a cat, it flees. But rats infected with the Toxoplasma brain parasite actually follow cat odors, often presumably to their doom, red in tooth a

发表于:2019-01-08 / 阅读(252) / 评论(0)

Scientific American(八)月

VOA慢速英语 Agriculture Report - Improving 'Feed Efficiency' in Cattle

Agriculture Report - Improving 'Feed Efficiency' in Cattle 农业报道 - 提高牛的饲养效率 From VOA Learning English, this is the Agriculture Report in Special English. 这里是美国之音慢速英语农业报道。 Animal feed is the bigge

发表于:2019-01-12 / 阅读(200) / 评论(0)

2012年VOA慢速英语(十一)月

TED演讲:我们为什么要排气(3)

At the same time, methanogens can use hydrogen and carbon dioxide produced by other bacteria to generate methane, 同时，产甲烷菌可以使用其他细菌产出的氢和二氧化碳以生成甲烷， which can reduce the total volume of gas by u

发表于:2019-01-17 / 阅读(195) / 评论(0)

TED演讲教育篇

TED演讲：每天一秒钟(4)

I was on a three-month road trip this summer. 今年夏天我度了三个月的假。 It was something that I've been dreaming about doing my whole life, 这是我一生梦寐以求的东西， just driving around the U.S. and Canada and just figurin

发表于:2019-01-18 / 阅读(182) / 评论(0)

TED演讲教育篇

2007年VOA标准英语-Water Filter Wins Developer Engineering Prize

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(247) / 评论(0)

2007年VOA标准英语（五月）

VOA常速英语2007年-Fuel Efficiency, Gadgets Mark Los Angeles Auto

By Mike O'Sullivan Los Angeles 16 November 2007 Auto makers who are showcasing their latest models at the Los Angeles auto show are expanding product lines in the hope of staying competitive in a changing market. Mike O'Sullivan reports, carmakers fr

发表于:2019-02-06 / 阅读(219) / 评论(0)

VOA常速英语2007年（十一月）

托福满分作文范文：关于工作时间

Some people prefer to get up early in the morning to start the day's work; while other people like to get up later in the day to work until late at night. Which option do you prefer? I would choose to get up early in the morning. This view is based o

发表于:2019-02-19 / 阅读(135) / 评论(0)

托福英语

经济学人243:节能以人为本 Back to basics

Back to basics 节能以人为本 Energy efficiency is not very flashy. That may be a selling point 能源增效并不那么高高在上，也许它还是个卖点。 Hope those are energy-saving bulbs 希望大家都使节能灯泡 WHEN Richard Sanc

发表于:2019-02-24 / 阅读(249) / 评论(0)

经济学人综合

英语口语轻松学第7期:get rich

ENGLISH MARATHON Host: Jeffery 叶茼荞 Do you take money? Pass the hat I'm broke. cover Practical Sentence eg: A:Is it free? B:Pass the hat. How much is the cover? Do you take money? Pass the hat I'm broke.

发表于:2019-02-27 / 阅读(222) / 评论(0)

英语口语轻松学

英语口语轻松学第9期:I know that's u

ENGLISH MARATHON Host: Jeffery top of my head. I can tell you by heart. I can tell you from the I will figure it out later. Practical Sentence I can tell you by heart. I will figure it out later. I can tell you from the top of my head.

发表于:2019-02-27 / 阅读(232) / 评论(0)

英语口语轻松学

ESL Podcast 882 – Playing a Practical Joke

Patricia: What are you doing? Luis: Im setting up a practical joke for Bobby. I cant wait to see the look on his face when he walks outside and finds his bike in pieces. Itll be the best prank ever! Patricia: Youre not really going to take apart his

发表于:2019-03-10 / 阅读(334) / 评论(0)

地道美语播客

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automatic oil-water pressure safety cutout device