低层发酵

Horizon - Life On Mars 火星生命 - 8

But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

发表于:2018-12-07 / 阅读(135) / 评论(0)

火星生命

AGRICULTURE REPORT - Making Cheese the Traditional Way, Part

AGRICULTURE REPORT - Making Cheese the Traditional Way, Part Two By Mario Ritter Broadcast: Tuesday, October 04, 2005 I'm Jim Tedder with the VOA Special English Agriculture Report. Last week, we hear

发表于:2019-01-02 / 阅读(148) / 评论(0)

农业与发展

VOA慢速英语2010年-EXPLORATIONS - A Lesson in Ancient Art

FAITH LAPIDUS: Im Faith Lapidus. DOUG JOHNSON: And Im Doug Johnson with EXPLORATIONS in VOA Special English. Since ancient times, people have grown grapes to produce wine. Join us as we tell about the history of wine and how it is made. We will also

发表于:2019-01-12 / 阅读(165) / 评论(0)

2010年VOA慢速英语(十)月

【英语时差8,16】葡萄酒和啤酒：不同酒种，同样基本过程-上

You start with a liquid containing some kind of sugar, add yeast, and wait. The yeast digests the sugar, giving off alcohol in the process. The sugar in beer comes mostly from a grain called barley. With wine, the sugar usually comes from grapes. Eit

发表于:2019-01-22 / 阅读(132) / 评论(0)

英语时差8，16

词根联想记忆法词汇教程（四）

发表于:2019-02-01 / 阅读(148) / 评论(0)

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