标签：toxin 相关文章
We are on the brink of uncovering a hidden world, a world that connects past and future generations in ways we never imagined possible. What this means is an environmental exposure that your grandmoth
基因外遗传现象
The blue-ring octopus is only about eight inches wide with its tentacles extended. It prefers shallow water near Australia and often lives under piers. It avoids humans. But if it must defend itself, this creature can deliver a bite that is fatal. Th
原版英文小故事
Right now, several thousand people are on the ground here in Tianjin, working to clean up the chemical disaster that is unfolding here. And you can see some of the crews right here behind me. They actually had to throw out the hazmat suits that they
CNN美国有线新闻2015年8月
That'true. monarch butterflies lay their eggs on milkweed plants.The caterpillars feed on milkweed, from which they extract substances called cardenolides, a type of chemical that can cause heart arrhythmia. This toxin doesnt affect the caterpillars
英语时差8，16
Bad Things Come in Small Packages 拆信小心！ While most armies in the world shun their use, and military authorities exclude them from warfare, the technology to produce biological and chemical weapons is widely available. Moreover, these weapon
双语有声阅读
The impact of a famine being captured by the genes in the eggs and sperm, and a memory of this event was being carried forward to affect the grandchildren, generations later. We are changing the view
基因外遗传现象
1. Outraging Gaza over the Israeli bombing of the United Nation's school. 10 people were killed when a bomb hit the structure that were sheltering 3,000 displacing Palestinians, the U.S state department calling the attack disgraceful, saying the scho
美联社新闻一分钟2014(八)月
Refugee Camps Spread Life-Threatening Diseases At a crowded camp in South Sudan, where thousands have come to escape the region's military conflict, officials report that an outbreak of Hepatitis E - a viral infection transmitted by contaminated food
VOA标准英语2012年(九月)
Possible solution to Kenya's fatal aflatoxin outbreaks Steve Baragona | Washington, DC 10 June 2010 People sharing and distributing aflasafe on a farm in Nigeria. Related Links International Institute of Tropical Agriculture As Kenya suffers with ano
VOA标准英语2010年(六)月
Living at the top of the food chain, sharks can accumulate dangerous levels of methylmercury. So much that pregnant women and children are advised not to eat shark at all. But sharks can accumulate another toxin too, called BMAA, which has been linke
2016年Scientific American(九)月
Bombardier Beetle 投弹手甲虫 Male：Is it a beetle or some sort? Female:Right in deed.It's a bombardier beetle .This one is an African species, but it could be found on most other continents too. M: Bombardier ? He releases bomb or some sort? F:
英语听力文摘 English Digest
Don: All right, Yael, you're a moth. And mating for you is a big deal because it takes eight or nine hours. So the last thing you want is for some predator to interrupt you and your mate in the act. Yael: I'm guessing that's true not just for moths.
英语听力文摘 English Digest
Europe has been in the grip of an outbreak of E.coli, which has so far infected 2,400 people and killed 24. Most cases have been caused by contaminated food produce, although E.coli can spread from person to person. Daniel Bahr, the German health min
英语听力精选进阶版
Toxin-loving Trees 树木能调节气候,保持生态平衡，树木通过光合作用，吸进二氧化碳,吐出氧气,使空气清洁，新鲜。一亩树林放出的氧气够65人呼吸一辈子。树还能防风固沙，涵养水土,吸收各种粉
英语听力文摘 English Digest
Pre-Listening Vocabulary get high: to experience a mood change from a drug or other substance toxin: a poisonous substance trance: a relaxed state in which you are not fully aware sceptic: a person who has doubts about something ferment: convert into
趣谈英语