单词：dead zone lag
单词：dead zone lag 相关文章
DAVID GREENE, HOST: This summer, a record-setting dead zone has appeared in the Gulf of Mexico. This is a zone where water does not have enough oxygen for fish to survive. One major cause of this is pollution from farms. And this has provoked a debat
2017年NPR美国国家公共电台8月
今天学的词组是lag。 Lag的意思是落后。911恐怖袭击之后， 美国各地纷纷做好应付恐怖袭击的准备。不过有评估报告说，最需严加防范的首都华盛顿在对付生物恐怖袭击方面准备不足，落后于许
英语每日一词
The problem of Jet Lag is one every international traveller comes across at some time. But do you have to suffer? Understand what it is, and how a careful diet can minimize its worst effects, and your flights will be less stressful. The effects of ra
双语有声阅读
Every spring, the Mississippi River dumps tens of thousands of tons of nutrient runoff into the Gulf of Mexico. Add temperature, current and wind to that pollution, and you have the Western Hemisphere's largest stretch of oxygen-poor watersa so-calle
2017年Scientific American(二)月
ARI SHAPIRO, HOST: Summer on the Chesapeake Bay is in full swing. (SOUNDBITE OF BOAT ENGINE IGNITION) SHAPIRO: We're in Maryland. We came here to find out what decades of work and hundreds of millions of dollars have done to clean up this body of wat
2017年NPR美国国家公共电台7月
Every spring, the Mississippi River dumps tens of thousands of tons of nutrient runoff into the Gulf of Mexico. Add temperature, current and wind to that pollution, and you have the Western Hemisphere's largest stretch of oxygen-poor watersa so-calle
2017年Scientific American(二)月