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| Vital-Signs(Ⅰ) | |
| 引用本文： | 白永康,黄协安.Vital-Signs(Ⅰ)[J].英语自学,1996(4). |
| 作者姓名： | 白永康 黄协安 |
| 摘 要： | The environment organization—World Watch Institution (2) lastweek released its yearly report about the condition of the world and itsresources.The report is called “Vital Signs 1994”.It is a collection of studies about changes in economic,social and en-vironmental conditions throughout the world.It provides a general idea |
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