美国科学60秒 SSS 2012-11-12
时间：2019-01-08 作者：英语课 分类：Scientific American(十一)月
英语课
Rising season severe storm is the most talked about threats of climate change. But here is another. No more coffee. Because rising temperatures make cripple wild populations of Arabica coffee, and most cultivated species in the world. So says a study in the journal PLoS ONE.
Researchers use climate models to forecast the effects of warming on Arabica coffee trees in Ethiopean,their native range. Under the best case scenario 1, meaning fewer emissions 2 and less warming. Only a third of today's range would still be suitable for coffee by 2080.In the worst case, wild Arabica could be nearly wiped out in the region. That's because coffee trees are sensitive to temperature. The researchers say, they may not be able to colonize 3 new areas fest enough to beat climate change. That's assuming no direct human impact, like clearing land for grazing, which is already a problem though. Of course the coffee in your cup doesn't come from wild trees. But wild coffee forest have a much bigger gene 4 pool than cultivated crops, meaning more * diease, path and drown. Preserving that diversity might just be grounds to act on climate change.
n.剧本，脚本；概要
- But the birth scenario is not completely accurate.然而分娩脚本并非完全准确的。
- This is a totally different scenario.这是完全不同的剧本。
排放物( emission的名词复数 )； 散发物（尤指气体）
- Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
- Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
v.建立殖民地，拓殖；定居，居于
- Around 700 Arabs began to colonize East Africa.公元700年阿拉伯人开始把东非变为殖民地。
- Japan used to colonize many countries in Asia.日本曾经殖民过许多亚洲国家。