除莠剂,杀草剂

VOA慢速英语2013 Agriculture Report - Getting a Firm Grip on Weed Control

Agriculture Report - Getting a Firm Grip on Weed Control 农业报道 - 控制杂草生长的办法 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 When is a plant considered a weed? Experts at Pen

发表于:2018-12-07 / 阅读(130) / 评论(0)

2013年VOA慢速英语(一)月

VOA慢速英语2009-Agriculture Report - The Seeds of Weed Control

This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When its undesirable qualities outweigh its good qualities. Consider this: Crops generally produce several

发表于:2018-12-15 / 阅读(39) / 评论(0)

VOA慢速英语2009年（五）月

VOA慢速英语2011--Ideas for Getting a Firm Grip on Weed Co

Agriculture Report - Ideas for Getting a Firm Grip on Weed Control 农业报道 - 控制杂草生长的办法 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 Weeds compete with plantings for water

发表于:2018-12-16 / 阅读(42) / 评论(0)

2011年VOA慢速英语(七)月

VOA慢速英语2013 Getting a Firm Grip on Weed Control

Getting a Firm Grip on Weed Control This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider the

发表于:2019-01-12 / 阅读(71) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2012 Agriculture Report - Getting a Firm Grip on Weed Control

Agriculture Report - Getting a Firm Grip on Weed Control 农业报道 - 严格控制杂草 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 When is a plant considered a weed? Experts at Penn State U

发表于:2019-01-12 / 阅读(51) / 评论(0)

2012年VOA慢速英语(六)月

AGRICULTURE REPORT - Biocontrols, Part 2

AGRICULTURE REPORT - Biocontrols, Part 2 By Mario Ritter Broadcast: Tuesday, April 20, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Biocontrols are the way nature seeks ba

发表于:2019-01-30 / 阅读(68) / 评论(0)

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学英语单词

abdominal vein

acidic odo(u)r

ahuaca oil

analytical atomic absorption spectroscopy

anchored choice

antemortem bloating

anterior palatine nerve (or greater palatine)

antiscorbutic vitamin

aproner

arcuator setaria

armature wedger