塑性变质

2007年VOA标准英语-Environmentalists in US Target Plastic Bags

By Ted Landphair Washington 09 August 2007 Every day, American consumers are offered a simple choice when they areby a store's cashier: paper or plastic? But as VOA's Ted Landphair explains in today's searching for solutions report, some communities

发表于:2019-01-07 / 阅读(100) / 评论(0)

2007年VOA标准英语（八月）

VOA慢速英语2013 Plastic Recycling

Plastic Recycling From VOA Learning English, this is EXPLORATIONS in Special English. Im Kelly Jean Kelly. And Im Christopher Cruise. Today we follow plastic bottles and other plastic objects as they go to one of the largest recycling centers in the

发表于:2019-01-12 / 阅读(54) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2013 EXPLORATIONS - Plastic Recycling

EXPLORATIONS - Plastic Recycling From VOA Learning English, this is EXPLORATIONS in Special English. Im Kelly Jean Kelly. And Im Christopher Cruise. Today we follow plastic bottles and other plastic objects as they go to one of the largest recycling

发表于:2019-01-12 / 阅读(47) / 评论(0)

2013年VOA慢速英语(三)月

纯正英语一分钟-plastic

Its amazing to think there wasnt any plastic one hundred years ago. Now its everywhere. Almost everything thats made has some plastic in it. Whoever invented it must be really rich. There are all kinds of plastic. Its pretty useful stuff. I once went

发表于:2019-01-21 / 阅读(45) / 评论(0)

纯正英语一分钟

Plastic pollution

Plastic Pollution NB: This is not an accurate word-for-word transcript Dan: Hello and welcome 6 Minute English from the BBC. Im Dan Walker Smith and today Im joined by Kate. Kate: Hello Dan. Dan: Now today Kate and I are talking about pollution. Kate

发表于:2019-02-04 / 阅读(52) / 评论(0)

六分钟英语

VOA常速英语2008年-Study Finds Some Plastic Baby Bottles Release T

By Robert Raffaele Washington, DC 12 February 2008 Tests on several plastic baby bottles have found they emit very significant levels of a chemical linked to deadly illnesses in laboratory animals. That is according to a new report released by Americ

发表于:2019-02-07 / 阅读(63) / 评论(0)

VOA常速英语2008年（二月）

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2-Mercapto-4-Hydroxypyrimidine

abote

aderenal medulla

advection-diffusion equation