时间:2019-01-08 作者:英语课 分类:Scientific American(二)月


英语课

 This is Scientific American's 60-Second Science. I'm Sophine Bushwick. Got a minute?


 
Crickets make a big contribution to the sounds of a summer night. And they’ve been doing so for some 165 million years. Now paleontologists have reconstructed the song of a long-extinct bushcricket—based on its remains 1.
 
The researchers got hold of a bushcricket fossil from the Jurassic period with well preserved wings. Even the stridulating organs, which insects rub together to make noise, were visible, which allowed researchers to compare the extinct cricket to 59 living species.The scientists concluded that the crickets produced single frequencies in short bursts. And based on physiology 2 and the comparisons,they estimated the pitch and length of each note that the ancient species sang. Here’s the call
 
[Cricket sound]
 
The study is in the Proceedings 3 of the National Academy of Sciences.This work shows that the anatomy 4 to make music had already evolved over a hundred million years ago. Like modern bushcricket species, the ancient male crickets probably sang to advertise their presence and reproductive quality to potential mates. As a bonus, they’ve helped us know a bit about the sound of their long-lost world.

n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
n.生理学,生理机能
  • He bought a book about physiology.他买了一本生理学方面的书。
  • He was awarded the Nobel Prize for achievements in physiology.他因生理学方面的建树而被授予诺贝尔奖。
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
n.解剖学,解剖;功能,结构,组织
  • He found out a great deal about the anatomy of animals.在动物解剖学方面,他有过许多发现。
  • The hurricane's anatomy was powerful and complex.对飓风的剖析是一项庞大而复杂的工作。
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学英语单词
'Aïn Tédélès
Ahura Mazda
aluminum processing
amidefrine mesilate
artery of the penis bulb
band elimination filter
begall
below-knee(B-K)amputation
billabong
Bittern L.
bonnel
cacatua goffiniana
cap-case
case reporter
chuans
combined transport of LCL cargo
curney
death grips
diplopagus
distribution theory
double-sided linear motor
drangme chhu (manas r.)
epiclassic
etch cut
facing of pile
filemark
hang-type breather
harta
have no effect up on
hazen
hemocytolysis
high pressure impregnation
hollow brick
house service generator
hydrogens
in trusting
in-situ stress
ineligible commercial paper
inergetical
inferior worm of cerebellum
intertrinitarian
inverse ray theory
joint false
leedom
let along
light spot type
longitudinal plane of symmetry
low memory
lower-eyelid
luminescent petrography
Lünne
magnetic hysteresis
mail-order department
marlar
mfsk (multi-frequency shift keying)
monocistronic transcript
name translation
nation states
necesito
nephrophthisis
nonexportation
nonideas
paraplanners
peculators
pituicytes
placier
pledgor
polycatenary
prevention of thievery
put a value on
quick start
returns auger
Reumycin
room blower
sentelle
shurtleff
spectrosensitogram
speed-limiting brake
suberin membrane
submesoscales
supply ... for
suture of scrotum
talk-aloud protocols
teratophiliacs
there is money in that
three fourths
time integral system
time urgent nuclear targets
toposaic
TopTOOLS
trans-activator(Tat)
twin coiler
twinflower
unsubmerged
uppercuts
user agent protocol
uterine gauze packer
vacuum electronics
ventricular systole time
weaving movement
winning coalition
xiphias gladiuss