单词：plate stem
单词：plate stem 相关文章
The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(n.[地]岩石圈)is divided into a few dozen plates o
新概念优美背诵短文50篇
今天还是要继续讲两个在大选期间新闻界常用来报道选战形势的习惯用语。你知道哪一种运动是美国人日常用语最丰富的源泉呢？是美国最风行的球类运动：棒球。今天要说的两个习惯用语都
美国习惯用语
在美国每年棒球季节的第一场比赛相当于春天来临的信息。说真的，这一百多年来最得美国大众青睐的运动就是棒球，而棒球运动也成了习惯用语的丰富来源。我们今天就专讲一些出自棒球运
美国习惯用语
By Alex Villarreal Washington 28 February 2008 Adult stem cell therapy has successfully treated leukemia and other cancers for years, in the form of bone marrow transplants. A new study in the Journal of the American Medical Association [JAMA] finds
VOA常速英语2008年（二月）
By Jessica Berman Washington 19 December 2007 Stem cell research was the major medical and science story this past year, topping the list of achievements that experts say might finally lead to cures for many diseases. Meanwhile, global health officia
VOA常速英语2007年（十二月）
今天我们要学的词是stem from. Stem spelled s-t-e-m, stem; and f-r-o-m, from. Stem from是源自，来源于的意思。The UN said Syrian government forces are responsible for most of the violence stemming from the country's unrest. 联合国表
英语单词荟萃