[海洋] 冷冻法淡化

Freezing Food

By Gary Garriott Broadcast: August 25, 2003 This is Steve Ember with the VOA Special English Development Report. Freezing can keep food fresh and safe to eat. Freezing lowers the food temperature belo

发表于:2018-11-27 / 阅读(438) / 评论(0)

VOA2003（下）-发展与科学

DEVELOPMENT REPORT - Freezing Food

DEVELOPMENT REPORT - Freezing Food By Gary Garriott Broadcast: Monday, December 27, 2004 I'm Gwen Outen with the VOA Special English Development Report. Freezing can keep food fresh and safe to eat. F

发表于:2019-01-02 / 阅读(58) / 评论(0)

农业与发展

考研辅导讲义

Part A Passage 1 For all his vaunted talents, Federal Reserve Chairman Alan Greenspan has never had much of a reputation as an economic forecaster. In fact, he shies away from making the precise to-the-decimal-point predictions that many other econom

发表于:2019-01-08 / 阅读(37) / 评论(0)

考研英语

VOA标准英语2009年-Desalination Schemes Stir Debate in Parched Aus

Authorities in Western Australia say they can show the world how to conquer a water crisis that had threatened to decimate the state capital, Perth, amid a long-standing drought and declining rainfall. Desalination is at the heart of Western Austral

发表于:2019-01-13 / 阅读(31) / 评论(0)

VOA标准英语2009年(二月)

Australian Researchers Aim for Greener Desalination

Researchers in Sydney are leading a new international effort to make desalination more environmentally friendly. Current techniques tend to use excessive amounts of energy or are heavily reliant on chemicals. The University of Technology in Sydney is

发表于:2019-02-06 / 阅读(48) / 评论(0)

英语新闻

第25届“世界水周”论坛

Doctor Li Lailai, China Director of the World Resources Institute says sustainable supplies of water and energy are intensifying in China as human demand continues to grow. She says water conservation is becoming a critical issue. We do have a progra

发表于:2019-02-07 / 阅读(31) / 评论(0)

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