单词：formation density logging
单词：formation density logging 相关文章
This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? We live in a nice neighborhood. Of the galaxy, that is. The sun is about halfway toward the outer edge of the Milky Way. But the sun may have migrated vast distances t
Scientific American(九)月
Cheryl: So, Nick, you've worked as an environmental scientist in Australia. Nick: Yeah, I have. I worked in my hometown in Tasmania, and in Tasmania, there's many environmental issues, particularly involving logging of native forests there. Cheryl: O
原版英语对话1000个
[00:04.52]24) Bush Meat Crisis: [00:11.21]The meat of wild forest animals, called bush meat, [00:16.09]has long been an important part of the diet of people in central and western Africa. [00:22.91]But hunters are killing too many of these animals. [
美国英语听力80篇
Good news has emerged this month for the world's forests. A new report from the London-based research group Chatham House says illegal logging is down by over 20 percent globally and by much more than that in some of the countries worst affected by t
VOA标准英语2010年(七)月
Billions of Dollars Lost Each Year to Illegal Logging The joint report, called Green Carbon / Black Trade, says between 30 and 100 billion dollars are lost each year to the illegal timber trade. Much of the loss is centered in key logging countries i
VOA标准英语2012年(十月)
By Chad Bouchard Bali 05 December 2007 Environmental experts at the United Nations Climate Change Conference in Bali say illegal logging is decimating tropical forests and contributing to rising global temperatures. Chad Bouchard reports from the con
VOA常速英语2007年（十二月）