时间:2018-12-27 作者:英语课 分类:英语时差8,16


英语课

You've heard about them, and maybe seen them in movies as they [dict]smash[/dict] apart ocean liners, or wash whole cities into the sea. What causes[dict] tidal [/dict]waves, and how are they different from the ordinary waves that wash against our coastlines? Tidal waves actually have nothing to do with tides, and nothing to do with ordinary ocean waves. They're more properly called "[dict]tsunamis 2[/dict]," which is Japanese for "harbor waves." It's a good name because, although tidal waves lie relatively 3 flat on the open ocean, they can pile up tremendously high when they hit the shallower water of a continental 4 shelf or harbor. Ordinary ocean waves are caused by the action of wind, like ripples 5 on a wind-blown pond. Even the impressive surf of the Pacific got its start as wind blowing across the open water. The height of such waves depends on how fast the wind is blowing, and how much open water the wind travels across. Tsunamis, however, have nothing to do with wind. They're caused by the sudden movement of the Earth's crust during an underwater earthquake or a volcanic 6 [dict]eruption[/dict]. Imagine a child's plastic wading 7 pool filled with water in the back yard. Ordinary waves are like the little surface ripples from the afternoon breeze. A tsunami 1 is what you'd get if you kicked the side of the pool. Tsunamis can travel thousands of miles, and still send water crashing a hundred feet high into a [dict]harbor[/dict] or coastal 8 town. A 1960 earthquake in Chile sent tsunamis across the Pacific at three hundred miles per hour, destroying harbors in Hawaii and Japan. On our next program, we'll learn what it's like to meet a tsunami on the open ocean.



1 tsunami
n.海啸
  • Powerful quake sparks tsunami warning in Japan.大地震触发了日本的海啸预警。
  • Coastlines all around the Indian Ocean inundated by a huge tsunami.大海啸把印度洋沿岸地区都淹没了。
2 tsunamis
n.海啸( tsunami的名词复数 )
  • Our oceans are alive with earthquakes, volcanoes, and more recently, tsunamis. 海中充满着地震、火山,包括最近发生的海啸。 来自常春藤生活英语杂志-2006年2月号
  • Please tell me something more about tsunamis! 请您给我讲讲海啸吧! 来自辞典例句
3 relatively
adv.比较...地,相对地
  • 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。
4 continental
adj.大陆的,大陆性的,欧洲大陆的
  • A continental climate is different from an insular one.大陆性气候不同于岛屿气候。
  • The most ancient parts of the continental crust are 4000 million years old.大陆地壳最古老的部分有40亿年历史。
5 ripples
逐渐扩散的感觉( ripple的名词复数 )
  • The moon danced on the ripples. 月亮在涟漪上舞动。
  • The sea leaves ripples on the sand. 海水在沙滩上留下了波痕。
6 volcanic
adj.火山的;象火山的;由火山引起的
  • There have been several volcanic eruptions this year.今年火山爆发了好几次。
  • Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
7 wading
(从水、泥等)蹚,走过,跋( wade的现在分词 )
  • The man tucked up his trousers for wading. 那人卷起裤子,准备涉水。
  • The children were wading in the sea. 孩子们在海水中走着。
8 coastal
adj.海岸的,沿海的,沿岸的
  • The ocean waves are slowly eating away the coastal rocks.大海的波浪慢慢地侵蚀着岸边的岩石。
  • This country will fortify the coastal areas.该国将加强沿海地区的防御。
学英语单词
.fla
acoustic tetanus
aculeolus
aftertastes
air-india
Alderdale
Alpers' disease
antifuse
atelochilia
automatic estimation tool
bad breaks
blackplanet
blade bone
boric oxide anomaly
bothersomely
Brunhilde
cadwelding
calcineurin
Cambodian accessories
cardanmounted
category code
cerebrosuria
common-depth-point
compilated
counter rotating propellers
crothet
davyhume
double-acting steam hammer
Dramyl
dry by
dynamic link library
enamoring
engine-generator
fair go
flat solid
format description type
Fraxinus cuspidata
free index
fuel behaviour
gaseous diffusion flame
genus ammobiums
genus scheffleras
horn actenna
household finance
hydragogue purgative
i-swike
increase in material circulating assets
ingolfiellids
inscrutabilities
ion-dipole
kvashnin
Lawrencetown
lickest
light water
lillies
lives through
magnetron frequency
marine industry
match lines
medium-speed mill
membranes bucconasal
menthocamphorate
modem number
naked confession
ncec
neolactotetraosylceramide
net paste
noise temperature ratio
non-volatile storages
noncrystallographic
normal salts
oenanthe aquaticas
OQR
outboxes
Pobeda
poetette
polydentate compound
powedered emery
pre-contractual disclosure
pyrite roaster gas
sample sale
Schöneiche
science-fictioneers
siliconcemen
sinaite
slive
spatial orientation
spyere
steepdown
sternannum
straight letter of credit
sub-value
superchain
top-down parsing
trigonal trisoctahedron
ultraradicals
valuation clanse
velocity-sensing microphone
very high frequency omnidirectional radio range
weaver-finch
welche
winneke