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2020考研英语：典型长难句解析(一)
1. Looking beyond the 10-year period， the botanists estimate that some 3，000 native plant species may become extinct in the foreseeable future&mdashmore than 10 percent of the approximately 25，000 species of plants in the United States.
在展望10年后的情况时植物学家们估计，在未来可预见到的时间内，3 000种本地植物&mdash&mdash占美国近25 000种植物的10%&mdash&mdash将可能灭绝。
2. The annual migrations of wildfowl and many other animals certainly cannot be regarded as a form of exploration， because such movements are actually only shifts from one habitat to another for the purpose of avoiding seasonal climatic variations.
野生禽类和许多其他动物每年的迁徙，当然不能被看做是一种探险行为，因为，这些迁徙活动实际上只是从一个栖息地转移到另一个栖息地，以躲避气候的季节性变化。
3. Proponents of G-M foods argue using biotechnology in the production of food products has many benefits： it speeds up the process of breeding plants and animals with desired characteristics can be used to introduce traits that a product wouldn‘t traditionally have can improve the nutritional value of products and can produce cheaper and more environmentallyfriendly fertilizers.
转基因食物的倡导者指出，用生物技术生产食物有很多益处：它能加速作物和牲畜的生长速度，并使它们具有所要求的特点它可以给食物增添以往不具备的特征可以改进食物的营养价值可以生产出廉价、环保效果更好的肥料。
4. What makes this debate unique is that every meal we eat is at its very core. And that fact means one thing： it‘s an issue to be discussed not only ...