树干流, 树干迳流

on board a ship,really could be an evil, that's a stem damage, maybe from a broken window, on this case, we've hit some rocks, what we need to try to do is down the flow of water, so that it's slower coming in that while we can pump or well them out.

发表于:2018-12-11 / 阅读(26) / 评论(0) 分类 万花筒2008年

The migrants, mainly from Eritrea, Ethiopia and Sudan's Darfur, are trying to find jobs in Israel, but Israeli leaders view this as a threat to security and to the Jewish character. Luis Ramirez | Israeli-Egyptian border 28 January 2010 Watch: Ramire

发表于:2019-01-13 / 阅读(31) / 评论(0) 分类 VOA标准英语2010年(一月)

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

发表于:2019-01-25 / 阅读(213) / 评论(0) 分类 VOA常速英语2008年(二月)

> 39 脂肪中的茎细胞有助于治疗糖尿病 DATE=4-26-01 TITLE=SCIENCE REPORT- Stem Cells in Fat BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(79) / 评论(0) 分类 科技之光

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

发表于:2019-02-17 / 阅读(74) / 评论(0) 分类 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

发表于:2019-02-18 / 阅读(72) / 评论(0) 分类 英语单词荟萃