传动指数，传力指数

VOA慢速英语2003年-农业与经济 Soil Conservation Meth

By Gary Garriott Broadcast: July 29, 2003 This is Bill White with the VOA Special English Agriculture Report. Soil conservation efforts protect soil from wind and water that can blow or wash it away.

发表于:2018-12-07 / 阅读(59) / 评论(0)

VOA2003（下）-农业与经济

Mars Rover to Begin Taking Soil Samples This Week

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(64) / 评论(0)

VOA2004（上）--各类新闻

SSS 2009-02-10

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Heres a novel potential public health measure against the flukick up the humidity. The cold, dry months of winter signal the start of flu season. But previous resear

发表于:2019-01-08 / 阅读(65) / 评论(0)

Scientific American(二)月

VOA慢速英语2010年-Agriculture Report - Growing Trees in

This is the VOA Special English Agriculture Report. Pieter Hoff used to export lilies and tulips from the Netherlands. He retired from the flower export business seven years ago. Now, he is trying to help people grow trees and plants in the desert --

发表于:2019-01-11 / 阅读(51) / 评论(0)

2010年VOA慢速英语(七)月

关于日食的英语作文

the total solar eclipse is one kind of very unusual phenomenon, in that several minutes, the sky brightness will drop 1,000,000 times suddenly, the temperature can fall suddenly suddenly. Moreover the total solar eclipse time is longer, the temperatu

发表于:2019-01-17 / 阅读(51) / 评论(0)

英语作文

Lesson 7-1：Weather 天气

Listen to the dialogues and check the items they have talked about. 英语对话1 A:Jenny, could you read tomorrow's weather report for me? B:What's it about? A:l'd like to know the wind and weather conditions. B:Why? A:Because Tom and I are going fi

发表于:2019-01-30 / 阅读(48) / 评论(0)

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单词：transmission index

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