时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

It’s often said we know more about the moon than we do about the depths of the ocean. There is a lot we don’t know about the H2O that covers much of the planet. Now we’re getting closer, though, to an important understanding: Just how deep are the oceans, and what’s the volume of all that water? The latest, best estimate is 1.332 billion cubic kilometers, according to research published in the journal Oceanography.


That’s actually lower than previous estimates by about five Gulf 1 of Mexicos. It’s not that there’s less water out there. Rather, new satelite images have presented a clearer image of all the mountain ranges strewn across the ocean floor. Those peaks displace what we’d thought of as space for water.


But even the new satellite-based radar 2 images still need fine-tuning. As researcher Walter Smith says, “We’re seeing only really big mountains, and in a blurry 3 way. The resolution is 15 times worse than our maps of Mars and the moon.”


Ship-based sonar would help, but ship-based instruments have mapped only about 10 percent of the ocean floor so far. We really do know more about the surface of the moon than the total ocean floor

 



n.海湾;深渊,鸿沟;分歧,隔阂
  • The gulf between the two leaders cannot be bridged.两位领导人之间的鸿沟难以跨越。
  • There is a gulf between the two cities.这两座城市间有个海湾。
n.雷达,无线电探测器
  • They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
  • Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。
adj.模糊的;污脏的,污斑的
  • My blurry vision makes it hard to drive. 我的视力有点模糊,使得开起车来相当吃力。 来自《简明英汉词典》
  • The lines are pretty blurry at this point. 界线在这个时候是很模糊的。 来自《简明英汉词典》
标签: 大海有多深
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adrenic
aero engines
aerogenic bacteria
air force-navy
air-glass interface
al-qaradawi
antifestival
argentoproteium
astern approaching method
atua
austrian capitals
automatic message accounting system
basalt clay(basalt wacke)
basophobia
be taken off allocation
bear's weed
binder stud
black market transaction in foreign exchanges
business concept
charge forward
chronotherapeutics
clear light size
common-mode input impedance
commutating brush
corner the market
coupling rod
curtain effect
cyatotheca
decrement viscosity gauge
designation plate
diclofenac potassium
direct coal-fired MGD generator
disembitters
distance between rolls
eileen farrells
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emergency-lighting set
fines removal
finger biscuit
flight-comparison
gasinduced osmosis
gear unit
golfese
good-government
governing institution
half-drunk
heat conduction calorimeter
hierarchy configuration
hierarchy of subnet
Hüfingen
immovable
implied answer
incarnata
incorded
it's a dog's life
lachnum brasiliense
landing navigation system
languid
lead dithionate
lead zirconate
magnetic flux density
malconformation
megalocorneas
membrane expansion theory
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National Center for Atmospheric Research
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nonabsorbable ligature
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normal thickness of blade
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old-men
on purpose
pacinian collagenoma
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photosynthesizers
polymetallic catalyst
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quantitative analysis in decision making
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shifting of load
sitdowner
sixty-ninth
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smokeless burner
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suturae temporariara
take advantage of
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waried
well I declare!
wet rot
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