时间:2019-02-26 作者:英语课 分类:英语听力文摘 English Digest


英语课

   Ow! Why Hot Feels Cold


  Kids don’t try this at home!
  Have you ever dipped your toe into a very hot bath and felt a flash of icy cold just before you realize that its really burning? After you pull your toe out, you might wonder what causes very hot water to feel cold.

  This odd sensation is called paradoxical cold and is caused by the temperature receptors in the skin. There are separate, specific receptors that respond to decreases or increases in skin temperature. If skin temperature drops, the cold receptors fire and if it increases, the warmth receptors fire.
  However, if a strong stimulus 1, like very hot water, can stimulate 2 not only the warmth receptors but also stimulate the pain receptors. These warn us that we are doing ourselves damage, and should take action to prevent it. The strong stimulus can also cause the abnormal stimulation 3 of the cold receptors.
  Over-stimulation can cause the confusing sensation of cold, hot and pain, but as long as we’re clear about pulling the toe out to safety, paradoxical cold is just another strange trick of the senses.

n.刺激,刺激物,促进因素,引起兴奋的事物
  • Regard each failure as a stimulus to further efforts.把每次失利看成对进一步努力的激励。
  • Light is a stimulus to growth in plants.光是促进植物生长的一个因素。
vt.刺激,使兴奋;激励,使…振奋
  • Your encouragement will stimulate me to further efforts.你的鼓励会激发我进一步努力。
  • Success will stimulate the people for fresh efforts.成功能鼓舞人们去作新的努力。
n.刺激,激励,鼓舞
  • The playgroup provides plenty of stimulation for the children.幼儿游戏组给孩子很多启发。
  • You don't get any intellectual stimulation in this job.你不能从这份工作中获得任何智力启发。
学英语单词
abrupt deceleration vehicle
achromachia
apacked
Auricularia auricula
australian pitcher plants
Avast hauling!
bepuff
beslabbered
buffered filter paper
Bulgarevo
buoyancy curve
cadmium sulphide
Catalpa L.
chrysandiol
Congo floor maggot
DC electric propulsion plant
defilippis
ecomil
eelworms
egg-white protein
engineering geological classification of rock mass
engraftment
eusebia
Evangelista Torricelli
evasion error
exponential expansion
fallopiuss
field-sequential system
fight up to the last ditch
final-year
fotp
geard
get a cold reception
guide block
hangava
hansler
harbo(u)r operational zone
Hemitrichia
heteragraft
high velocity liquid jet machining
high-voltage glow tube
hormone culture-medium
hydnocarpus wightiana bl.
hytners
I fear
illtempered
Indosasa patens
information given in a questionnaire
information retrieval system evaluation
initial steam admission
insoluble solides
irrigated soil
Kinnitty
Kolomonyi
lactic-acid
Lithocarpus
LVTR
magnetohydrodynamic propulsion plant
manganese(iv) silicide
marmalade trees
mattings
mesengium
microvoltmeter
monetizability
nanocavity
Newry Canal
non-zero restriction
oil lubricating system
onishi
optic integrated circuit
pellet mouldings
PGS (program generation system)
plesiotrochus acutangulus
prepacked with grease
prevailing price
prunus mume sieb.et zucc.var.tonsa rehd.
prunus mume var.bungo mak.
purplestreak alstroemeria
rag out
residentiaries
reverse pinocytosis
rizzle
ruscombe
sample grid reference
Sandnessjφen
sandy mushrooms
secondary process
sent out
sound intensity decay
sprawlings
statistical weights
strapped multiresonator circuit
subfraction
Suttsu
the top of
tightness of stitches
top-fired boiler
triangulation balloon
unconquering
unfamiliarity
uredo cryptogrammes
Voidable Civil Act