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英语听力：自然百科 大堡礁：珊瑚礁到雨林—26

时间：2014-10-30 08:24:00

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（单词翻译）

 These huge tracks of rainforest close to the Queensland coast are essential because they regulate the flow of water and the sediment1 it contains. That’s important, because there’s an awful lot of water here. 

 
Hot humid tropical air gives rise to vast amounts of rainfall. It pours for at least 120 days a year. And as much as 60 centimeters can fall in a single day. It’s one of the wettest places on earth. Left unchecked by the forest, the water would wash out sediments2 and smother3 marine4 life. But waterways flowing off the rainforest are relatively5 clear, and many are spectacular.

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1 sediment IsByK     
n.沉淀，沉渣，沉积(物)
参考例句：
  • The sediment settled and the water was clear.杂质沉淀后，水变清了。
  • Sediment begins to choke the channel's opening.沉积物开始淤塞河道口。
2 sediments 8b3acb612b624abdf2c2881bc6928565     
沉淀物( sediment的名词复数 )； 沉积物
参考例句：
  • When deposited, 70-80% of the volume of muddy sediments may be water. 泥质沉积物沉积后，体积的70-80％是水。
  • Oligocene erosion had truncated the sediments draped over the dome. 覆盖于穹丘上的沉积岩为渐新世侵蚀所截削。
3 smother yxlwO     
vt./vi.使窒息；抑制；闷死；n.浓烟；窒息
参考例句：
  • They tried to smother the flames with a damp blanket.他们试图用一条湿毯子去灭火。
  • We tried to smother our laughter.我们强忍住笑。
4 marine 77Izo     
adj.海的；海生的；航海的；海事的；n.水兵
参考例句：
  • Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
  • When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。
5 relatively bkqzS3     
adv.比较...地，相对地
参考例句：
  • The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
  • The operation was relatively painless.手术相对来说不痛。

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