时间:2019-03-06 作者:英语课 分类:英语听力广播—Listening


英语课
Why do we have fingerprints 1?
我们为什么有指纹?
Many experts think it's to improve grip, but a British study from a few years back suggests otherwise.
 
Researchers found that a fingerprint's ridges 2 actually madeit harder to hold flat, smooth surfaces, like Plexiglas, because they reduced the skin’s contact area.
 
Instead, they think our prints might help wick water off our fingertips or allow our skin to stretch more easily, which can protect it from damage and help prevent blisters 3.
 
Other scientists have suggested fingerprints could improve our sense of touch.
 
What we do know for sure is that no two people's fingerprints are the same, even among identical twins.
 

n.指纹( fingerprint的名词复数 )v.指纹( fingerprint的第三人称单数 )
  • Everyone's fingerprints are unique. 每个人的指纹都是独一无二的。
  • They wore gloves so as not to leave any fingerprints behind (them). 他们戴着手套,以免留下指纹。 来自《简明英汉词典》
n.脊( ridge的名词复数 );山脊;脊状突起;大气层的)高压脊
  • The path winds along mountain ridges. 峰回路转。
  • Perhaps that was the deepest truth in Ridges's nature. 在里奇斯的思想上,这大概可以算是天经地义第一条了。
n.水疱( blister的名词复数 );水肿;气泡
  • My new shoes have made blisters on my heels. 我的新鞋把我的脚跟磨起泡了。 来自《现代汉英综合大词典》
  • His new shoes raised blisters on his feet. 他的新鞋把他的脚磨起了水疱。 来自《简明英汉词典》
学英语单词
abdesselam
amphicelous
anaptyxes
aneurysm of interventricular septum
antipathes
antiradon
antisphexishness
artificial lake
ash pan hopper
bardolph
be transformed into
bushy-taileds
Callitris glauca
cambium rot disease
carbapatite
Carhuamayo
cell staining cage
cgce
chauffeurless
Chenopodium murale
choripetalous flower
Combiterms
compendize
compilation of details with scribing
compliance in suspension
convergence solution
core lattice
cos-r
cyclophorus turgidus
dane gun
defocusses
dis-saving
dog and bone
ethenoid resin
excitation of turbulence
executive-produce
expert at
financial input
fipas
four-wing rotary bit
fund unit holder
fungillus
gear measuring tool
Generation Xer
genometastasis
get the fright of one's life
Guisane
hawkman
hot shearing
hydramethylnon
hydraulic core extractor
IOM (input/output multiplexer)
Kalialbite
Koolunga
Li Ning
M. & Ayr.
machinery horse-power
maidu
marketing price policies
marry him
missing pick
MMM (monolithic main memory)
monolinguist
more-creative
multimode wavelength-division multiplexer
natural sine
noble savages
non utility
normobaric solution
nucleus tractus solitarius
Octamide
oscillator amplifier unit
outexecutes
paraphrasia verbalis
partial information maximum likelihood estimator
pickaternie
primary natural radio-nuclide
ramorelix
reimbursable expenditure
relativised
reversed series starting rheostat
ribbed roller
sagitate
screen printing glaze
self-check digit
semen tonco
sheet pile cullular type breakwater
solenostomus cyanopterus
Spara
spindle angle
textual exegesis
travelling scraper
Trikala
trovy
u.s. industrial film and video festival
underpressures
vaeiety meat
volume group
weak-base anion exchanger
Wetan, Pulau
wiesels
Winnipeg couches