科学美国人60秒 SSS 2014-10-07
时间：2019-01-20 作者：英语课 分类：2014年Scientific American(十)月
英语课
Here is good news bad news story. Scientists are able to dramatically increase yields of oil palm trees axxx the global market. Oil palm trees grow in tropic so that means more profit for less land helping 1 to protect tropical farms. Good news, right? But in an article of Journal of Science, research shows how the increase of yield could in fact lead to even more tropical destruction because as the value of oil palm tree planting increases, farmers could want to plant even greater track of land which is bad news. Also a future increase of supply could lead to decreases of price. So palm oil will out compete with rapeseed oil, which comes from Canada. It will lead to a higher demand for palm oil, which is worse news. In addition, current low yield and production cost means it is not planted as much as in Africa and South America. But higher yields will attract planters in these regions, leading to more tropical farms destruction. To prevent these developments, the researchers and policy makers 2 need to be aware of and plan for the unintended and negative consequences of technical advances, which would be good news.
n.食物的一份&adj.帮助人的，辅助的
- The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
- By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。