[化] 甲代烯丙基溴

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 2011-04-11

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Landfills produce methanewhich can be valuable as an energy source. But scientists haven't known why landfills make so much methane. The solid waste in

发表于:2019-01-08 / 阅读(106) / 评论(0)

Scientific American(四)月

Study: Loss of Ozone Slows

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(67) / 评论(0)

VOA2003（下）-环境与健康

AGRICULTURE REPORT - Cover Crops

AGRICULTURE REPORT - Cover Crops By Mario Ritter Broadcast: Tuesday, March 23, 2004 This is Steve Ember with the VOA Special English Agriculture Report. The idea to grow a crop that improves the land

发表于:2019-01-30 / 阅读(68) / 评论(0)

农业与发展

VOA标准英语2010年-Meth Still Grips, But Doesn't Strangle

Raw anti-drug campaign awakens state Ted Landphair | Missoula, Montana 04 February 2010 Photo: Montana Meth Project Adults across Montana were frightened by what they were seeing. Some hardly recognized their meth-addled teenagers. Related Links Mont

发表于:2019-02-02 / 阅读(52) / 评论(0)

VOA标准英语2010年(二月)

环球英语 — 181：Crystal Meth: A Drug Problem

Voice 1 Hello. Im Ruby Jones. Voice 2 And Im Marina Santee. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. A small candle burns. It re

发表于:2019-02-21 / 阅读(64) / 评论(0)

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artificial glycosuria