甲氢偶氮苯；1-苯-2-【草(之上)+叨】肼

美国国家公共电台 NPR Long Before Burning Man, Zozobra Brought Fire And Redemption To The Desert

Long Before Burning Man, Zozobra Brought Fire And Redemption To The Desert play pause stop mute unmute max volume 00:0005:40repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update

发表于:2018-12-02 / 阅读(87) / 评论(0)

2016年NPR美国国家公共电台9月

AGRICULTURE REPORT - Restrictions on Methyl Bromide

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(87) / 评论(0)

农业与发展

SSS 2011-08-12

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(69) / 评论(0)

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高智能家电：冰箱洗衣机可“对话”

A fridge that talks to your washing machine and a television that instructs your dishwasher. It's all possible at CeBIT, the world's top high-tech fair. 冰箱和洗衣机交谈、电视向洗碗机下令在世界顶级高科技展会德国汉诺威通

发表于:2019-02-04 / 阅读(129) / 评论(0)

实用英语

净化室内空气选这些植物就对了！

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(66) / 评论(0)

阅读空间

夏说英语新闻晨读第499期:兔子与绿萝杂交

本期内容： A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(48) / 评论(0)

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学英语单词

-aster

abdominal deliveries

accommodation ladder platform

ageing action

american dietetic association

ampulla of rectum

array search

artemisia monophylla kitam.

besort

bifurcator

bird watching