时间:2018-12-24 作者:英语课 分类:Scientific American(四)月


英语课

This is Scientific American's 60-Second Science, I'm Karen Hopkin, this will just take a minute.


 


Shakespeare once said: A rose by any other name would smell as sweet. And that is true today as it was 400 years ago. What's different now, though, is their smell doesn't travel as far as it used to. Or so say scientists in a study that appears online in the journal Atmospheric 1 Environment, researchers at the University of Virginia made a mathematical model to show how the fragrance 2 of flowers floats through the air. They found the presence of pollution slows the scents 4 down. Prior to the Industrial Revolution, the sweet smell of roses might drift for three quarters of a mile. Now, downwind of a major city, a flower's delicate bouquet 5 can't make it a full thousand feet. That's because the scent 3 molecules 6 produced by flowers are volatile 7, they chemically react with ozone 8 and other pollutants 9, and ka-bloomy. No more eau d’springtime. The effect might pose a minor 10 nuisance to modern poets, but it's a major problem for flowering plants and the insects that pollinate them, bumblebees find flowers by smelling them, less aroma 11 attracts fewer bees which ultimately means fewer flowers. So stop and smell the roses, if you're close enough.


 


Thanks for the minute, for Scientific American's 60-Second Science, I'm Karen Hopkin.

 



1 atmospheric
adj.大气的,空气的;大气层的;大气所引起的
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
2 fragrance
n.芬芳,香味,香气
  • The apple blossoms filled the air with their fragrance.苹果花使空气充满香味。
  • The fragrance of lavender filled the room.房间里充满了薰衣草的香味。
3 scent
n.气味,香味,香水,线索,嗅觉;v.嗅,发觉
  • The air was filled with the scent of lilac.空气中弥漫着丁香花的芬芳。
  • The flowers give off a heady scent at night.这些花晚上散发出醉人的芳香。
4 scents
n.香水( scent的名词复数 );气味;(动物的)臭迹;(尤指狗的)嗅觉
  • The air was fragrant with scents from the sea and the hills. 空气中荡漾着山和海的芬芳气息。
  • The winds came down with scents of the grass and wild flowers. 微风送来阵阵青草和野花的香气。 来自《简明英汉词典》
5 bouquet
n.花束,酒香
  • This wine has a rich bouquet.这种葡萄酒有浓郁的香气。
  • Her wedding bouquet consisted of roses and ivy.她的婚礼花篮包括玫瑰和长春藤。
6 molecules
分子( molecule的名词复数 )
  • The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
  • Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里,大分子裂变为小分子。
7 volatile
adj.反复无常的,挥发性的,稍纵即逝的,脾气火爆的;n.挥发性物质
  • With the markets being so volatile,investments are at great risk.由于市场那么变化不定,投资冒着很大的风险。
  • His character was weak and volatile.他这个人意志薄弱,喜怒无常。
8 ozone
n.臭氧,新鲜空气
  • The ozone layer is a protective layer around the planet Earth.臭氧层是地球的保护层。
  • The capacity of ozone can adjust according of requirement.臭氧的产量可根据需要或调节。
9 pollutants
污染物质(尤指工业废物)( pollutant的名词复数 )
  • Pollutants are constantly being released into the atmosphere. 污染物质正在不断地被排放到大气中去。
  • The 1987 Amendments limit 301(g) discharges to a few well-studied nonconventional pollutants. 1987年的修正案把第301条(g)的普通排放限制施加在一些认真研究过的几种非常规污染物上。 来自英汉非文学 - 环境法 - 环境法
10 minor
adj.较小(少)的,较次要的;n.辅修学科;vi.辅修
  • The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
  • I gave him a minor share of my wealth.我把小部分财产给了他。
11 aroma
n.香气,芬芳,芳香
  • The whole house was filled with the aroma of coffee.满屋子都是咖啡的香味。
  • The air was heavy with the aroma of the paddy fields.稻花飘香。
标签: SSS Atmospheric
学英语单词
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accelerated application valve portion
acromial network
affiliating
alarm window
any old thing
asynchronous gyro motor
asynchronous transfer
ballistic laser holographic system
big amount
bobbin support bolt
bromononane
bypass capacitors
canalboat
chaetomium gangligerum
climate engineering
clitocybe dealbatas
coastal industry
coaxial termination
crabwisest
cross rafter
cull-tie
cyclic-inscriptable
derats
detecton
dichlorodimethylhydantoin
DILFs
direct (out-of-pocket) expenses
Discount Note
dryosaurids
duboy's bed load equation
dyf-
ecosystem type
exfoliant
file detail
forward multiple
fracture by crushing off
frim fram
given horse power
gospellers
haddam
havelis
high bars
high speed vertical miller
Hokinson, Helen
hydrothermal vent community
immediate device control block
immunostainer
information-theories
iridomalacia
isoalloxazine
local pressure gradient
local-governments
Metapan
MHHW
Mihla
naifer
neckweed
nickel-iron core
nodi lymphatici bronchopulmonales
non contractual liability
non-uniform rotor blade
over square
over the mark
palm push fit
paralecanium expansum expansum
paulingite
positive infinite product
postscripts
Power-efficiency
privilege of parliament
productive energy of feed
pulp magazine
pulseconverter
reexhumations
regio palpebralis superior
rhacomitrium dicarpum broth
sachemship
Salamīyah
save one's carcass
scleroma
scrawl
self-assembling
shipbuilder's computing center
social-development
soil erosion prediction model
spinnah
steel-cored aluminum cable
straight muscle of abdomen
symmetrical minor
terzic
theory of categories
thermal measurement
Thornton Dale
Turkey opium
tuzzle
venae scrotales
Vichy water
war horse
waspless
widowhoods
will ye , nill I