单词：exhaust dust device with bag
单词：exhaust dust device with bag 相关文章
From VOA Learning English, this is the Health Lifestyle report. From Asia to Europe to North America, poor air quality is making people sick and, in some cases, killing them at an early age. Air pollution causes six million premature deaths every yea
2017年VOA慢速英语(四)月
[00:07.21]NASA's Stardust spacecraft has successfully deployed a device that will collect extremely small particles in space. [00:16.95]The particles are called dust. [00:19.72]They form a stream of particles that flows through our solar system. [00:
美国英语听力80篇
[00:00.00]Module 9 PERSONAL THINGS [00:05.77]UNIT 1 Whose bag is this? [00:09.67]1 Listen and read.Then say. [00:14.41]Whose bag is this? [00:17.43]It's mine,sir. [00:19.70]Is this your jacket? [00:22.36]Yes,it's my jacket. [00:25.20]Is this your bag
外研社新标准初中英语七年级
英国每日邮报:随着手机的普及,如今人们不再认为座机电话是日常生活中的必需品了. 座机电话 Daily Mail: According to a report, landline telephones are no longer regarded as 'essential' in many households. Thanks to sm
双语趣听精彩世界
AS IT IS 2016-09-25 Tiny Devices for Studying the Brain From the Inside 微型仪器可从内部研究人类大脑 In the future, very small wireless devices could be placed inside human brains to study and stimulate brain cells. 在未来，非常小的
2016年VOA慢速英语(九)月
Flammable materials 易燃材料 A: Is that a no-smoking sign? A:那是禁烟标志吗？ B: Yes, it is. As you know, some of the materials we use are highly-flammable so we have a very strict non-smoking policy in the factory. B:是。你知道，我们
职业技术英语口语