英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

60秒科学:Immigrant Dust Feeds Rain Forests

时间:2010-10-18 03:24来源:互联网 提供网友:princetngirl   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

Immigrant Dust Feeds Rain Forests
Intercontinental dust helps fertilize1 lush forests in the Western Hemisphere and Hawaii, noted2 Oliver Chadwick of the University of California, Santa Barbara, at the annual meeting of the American Association for the Advancement3 of Science in San Diego on February 19th. Steve Mirsky reports

It’s long been known that nutrient-rich dust from Africa floats across the Atlantic to the Amazon. And it’s assumed that the dust fertilizes4 the rainforest. Oliver Chadwick from the University of California, Santa Barbara, says that Hawaii can also thank immigrant dust for its lush forests:

“Hawaii is one of the least dusty places in the world. It’s one of the most remote archipelagos in the world and receives very little dust. And yet, we’ve been able to demonstrate that the phosphorus that’s carried by the dust and deposited on the old landscapes in Kauai actually fertilizes the forest.”

Speaking February 19th at the annual meeting of the American Association for the Advancement of Science in San Diego, Chadwick noted that Puerto Rico also relies on African dust for fertilization. “Through the atmosphere, all parts of terrestrial ecosystems5, forests, grasslands6, are linked in a very effective way.”
 


点击收听单词发音收听单词发音  

1 fertilize hk5x8     
v.使受精,施肥于,使肥沃
参考例句:
  • Fertilizer is a substance put on land to fertilize it.肥料是施在地里使之肥沃的物质。
  • Reading will fertilize his vocabulary.阅读会丰富他的词汇。
2 noted 5n4zXc     
adj.著名的,知名的
参考例句:
  • The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
  • Jim is noted for arriving late for work.吉姆上班迟到出了名。
3 advancement tzgziL     
n.前进,促进,提升
参考例句:
  • His new contribution to the advancement of physiology was well appreciated.他对生理学发展的新贡献获得高度赞赏。
  • The aim of a university should be the advancement of learning.大学的目标应是促进学术。
4 fertilizes ccea33d1688a9cd447a762d7b86f4192     
n.施肥( fertilize的名词复数 )v.施肥( fertilize的第三人称单数 )
参考例句:
  • The male sperm fertilizes the female egg. 雄性的精子使雌性的卵子受精。 来自辞典例句
  • When the male reproductive cell fertilizes the female reproductive cell a zygote is formed. 当男性生殖细胞与女性生殖细胞发生受精时,就形成了一个合子。 来自辞典例句
5 ecosystems 94cb0e40a815bea1157ac8aab9a5380d     
n.生态系统( ecosystem的名词复数 )
参考例句:
  • There are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
  • Madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样,从雨林到半荒漠等不一而足。 来自辞典例句
6 grasslands 72179cad53224d2f605476ff67a1d94c     
n.草原,牧场( grassland的名词复数 )
参考例句:
  • Songs were heard ringing loud and clear over the grasslands. 草原上扬起清亮激越的歌声。 来自《现代汉英综合大词典》
  • Grasslands have been broken and planted to wheat. 草原已经开垦出来,种上了小麦。 来自《简明英汉词典》
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   60秒科学  Immigrant  60秒科学  Immigrant
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴