土壤结构类型

Can't She Type?

Lesson 38 Text A Can't She Type? The well-known banker, T. J. Ellington, was at one time in his younger days the manager of a New York office. His secretary had been with him for many years, and knew

发表于:2018-12-02 / 阅读(144) / 评论(0)

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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(62) / 评论(0)

VOA2003（下）-农业与经济

VOA慢速英语2010年-Agriculture Report - Many Farmers and

This is the VOA Special English Agriculture Report. Farmers and gardeners have turned the soil for centuries. But many now believe in no-till or reduced tillage, a method also called conservation tillage. The Conservation Technology Information Cente

发表于:2018-12-07 / 阅读(33) / 评论(0)

2010年VOA慢速英语(九)月

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(66) / 评论(0)

VOA2004（上）--各类新闻

成功维修比萨斜塔

66 成功维修比萨斜塔 DATE=7-12-01 TITLE=SCIENCE REPORT - Leaning Tower of Pisa Repaired BYLINE=George Grow (Start at 1'02

发表于:2019-01-30 / 阅读(41) / 评论(0)

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计算机-数据结构基本英语(1)

数据结构基本英语词汇数据抽象 data abstraction 数据元素 data element 数据对象 data object 数据项 data item 数据类型 data type 抽象数据类型 abstract data type 逻辑结

发表于:2019-02-01 / 阅读(55) / 评论(0)

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1-caprylene

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