螺旋状阴极

VOA慢速英语2011--How to Make Your Own Solar Water Heater

Technology Report - How to Make Your Own Solar Water Heater This is the VOA Special English Technology Report. Solar water heaters are used around the world and are not very difficult to build. The system we are going to describe is based on a design

发表于:2018-12-16 / 阅读(58) / 评论(0)

2011年VOA慢速英语(四)月

DEVELOPMENT REPORT – How to Make a Solar Water Heater

DEVELOPMENT REPORT – How to Make a Solar Water Heater By Gary Garriott Broadcast: Monday, November 29, 2004 I'm Gwen Outen with the VOA Special English Development Report. Solar water heaters save o

发表于:2019-01-02 / 阅读(60) / 评论(0)

农业与发展

VOA慢速英语 Development Report - Making a Solar Water Heater

This is the VOA Special English Development Report. Solar water heaters are devices that use energy from the sun to heat water. Solar water heating is used around the world. An example of a rooftop solar water heater being built in South Africa The

发表于:2019-01-11 / 阅读(59) / 评论(0)

VOA慢速英语2009年（四）月

2015-07-15 BBC:巨石阵行动:被埋藏的秘密-7

It would be a brilliant place for hunt together as to hides and observe the movements of these huge animals. Topographical scans have revealed the contours of this ancient landscape, features that mesolithic kind togetherness could exploit. Where the

发表于:2019-01-23 / 阅读(60) / 评论(0)

探索与发现2015年

实用英语口语1

I'll get right on it .我现在就去办。 I'm busy with writing the year-end report.I forgot to buy the Christmas cards.I'll get right on it.刚才我忙着写年终总结，忘了买圣诞节。我这就去办。 Yes,you should get right on it .是的

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I'll get right on it .我现在就去办。 I'm busy with writing the year-end report. I forgot to buy the Christmas cards. Ill get right on it.刚才我忙着写年终总结，忘了买圣诞卡。我这就去办。 Yes, you should get right on it .是

发表于:2019-02-26 / 阅读(61) / 评论(0)

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