土壤抑菌作用

VOA慢速英语2011--Getting to the Root of How to Water Tree

Agriculture Report - Getting to the Root of How to Water Trees This is the VOA Special English Agriculture Report. Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than t

发表于:2018-12-07 / 阅读(80) / 评论(0)

2011年VOA慢速英语(八)月

VOA慢速英语2009-Agriculture Report - Do-It-Yourself: Compost

This is the VOA Special English Agriculture Report. Compost is a dark, rich material added to soil to improve it. Compost is produced when bacteria and fungi break down organic matter, aided by insects, earthworms and other organisms. This natural r

发表于:2018-12-15 / 阅读(41) / 评论(0)

VOA慢速英语2009年（六）月

VOA慢速英语--Study: Warmer Soil Releasing More Carbon

Even the dirt on the ground is likely making climate change worse, a new study finds. Researchers have shown that warmer temperatures are heating the soil, which is causing microbes to become more active and release more of the soils carbon into the

发表于:2019-01-03 / 阅读(111) / 评论(0)

2018年VOA慢速英语(八)月

TED演讲:论生物多样性(2)

In so doing, I reached a frontier of biology so strange, so rich, 通过这样的方式，我来到一个非常古怪却又非常丰富的生物学领域， that it seemed as though it exists on another planet. 简直就像降临到别的星球一样。

发表于:2019-01-03 / 阅读(59) / 评论(0)

TED演讲科学篇

精彩托福句子 2

11.Acids are chemical compounds that,in water solution,have a sharp taste， a corrosive action on metals,and the ability to turn certain blue vegetable dyes red. 12.Billie Holiday's reputation as a great jazz-blues singer rests on her ability to giv

发表于:2019-02-13 / 阅读(40) / 评论(0)

托福英语

【英语语言学习】古老的脚印

Im Anna Matteo. And Im Christopher Cruise. Today we tell how some extremely small organisms may help meet our food needs in the future. Then, we report on an American project to save endangered orchids. Finally, we tell about the discovery of what Br

发表于:2019-02-16 / 阅读(23) / 评论(0)

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