有机[化学]分析

WWOOF: World-Wide Opportunities on Organic Farms

By Mario Ritter Broadcast: July 8, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Recently, a listener in Nigeria told us about an organization called World-Wide Opportuniti

发表于:2018-12-07 / 阅读(59) / 评论(0)

VOA2003（下）-农业与经济

Listen this way听力教程第二册-11

发表于:2018-12-27 / 阅读(70) / 评论(0)

Listen this way听力教程

60秒科学:Murchison Meteorite's Chemical Bonanza

Murchison Meteorite's Chemical Bonanza The 1969 Murchison meteorite was known to harbor complex organic compounds, but a new analysis in Proceedings of the National Academy of Sciences finds that it may also contain millions of chemicals and shed lig

发表于:2019-01-02 / 阅读(94) / 评论(0)

60秒科学

英语分类词汇：环境污染

污染物 aerosols气溶胶 / 气雾剂 agricultural wastes农业废物 asbestos石棉 commercial noise商业噪音 composite pollution混合污染 dioxins二恶英 hazardous substances危险物质 hazardous wastes危险废物 heavy metals重金属 h

发表于:2019-01-03 / 阅读(116) / 评论(0)

英文语法词汇

VOA标准英语2010-African Farmers Growing Organic Foods for

A melon field is pictured at a farm in the village of Djilakh, 80km south of Dakar, Senegal on 22 Apr 2008 (file photo) African farmers are making more money producing organically grown crops for European markets, where demand for healthier food is g

发表于:2019-01-11 / 阅读(31) / 评论(0)

VOA标准英语2010年(四)月

AGRICULTURE REPORT - Chemicals on Organic Food

AGRICULTURE REPORT – July 30, 2002: Chemicals on Organic Food By George Grow (Photo -Scott Bauer) This is the VOA Special English AGRICULTURE REPORT. Farmers who grow organic food do not use chemica

发表于:2019-01-30 / 阅读(55) / 评论(0)

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A-61827

abelia dielsii rehd.

address translation map

agricultural pathology

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allowable bearing load

Avila

balance system of pumping unit

Barbis

be grateful to

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