时间:2019-02-23 作者:英语课 分类:英语时差8,16


英语课

At one time it was believed that heat was a liquid. Sure, that sounds kind of crazy, but if you think for a second, you might see why. Suppose you have an object that’s very hot — say a metal spoon that’s been sitting in hot coffee. Pick it up and you can feel the heat spreading to your hand. The longer you hold on, the more heat seems to enter your hand. Ouch!Well, maybe heat is an invisible liquid that pours from the spoon into your hand. After all, that theory fits all the evidence, doesn’t it?But there’s a problem. Another simple experiment you can do shows heat can’t be a liquid.Take two nails and scrape them together vigorously 1. Now touch the place you were scraping. It’s hot! Let them cool and try it again. It’s hot again!



ad.用力地;有力地;剧烈地
  • He rubbed his limbs vigorously to get the blood circulating. 他用力摩擦四肢让血液循环开来。
  • He shook the blankets vigorously to get rid of the dust. 他使劲抖动毯子以抖掉尘土。
学英语单词
a forxa galicia
a niche in the temple of fame
abstinence of war
acme thread gauge
ad hockeries
air burst
alpi
amyl valerate
arm turn
b.n.f.jet test
Beatenberg
bobbin box
braver
bronze vessel
Cidocetine
clicking sound
cocked body
color coding
counter chaim
counter ring
cross-promotions
crystallization power
cylinder temperature
Delphinium cheilanthum
diabetes insipiduss
die entrance angle
dried full cream milk
drooker
electric pressure ga(u)ge
emergency trip header
encinal
equivalent principle
erament
exanthema leprosum
family amygdalaceaes
fed-ex
fedrilate
furacilin
Gama, I.
genus Paralithodes
gerald rudolph fords
gingivitis marginalis suppurative
glaucogenin
glavered
hack lever
hanwells
horizontal mixer
hydraudic chuck
imprison
inert diluent gas
infliction of body
kernel grammar
Laburnum alpinum
lamarckisms
larrousse
light casting
lycopodiaceae
magazine compact edition
Magnolia liliiflora
matrotroph
Medwin Pt.
metallurgy of ferrous metals
methyldihydromorphine
multiplex paralyses
Newcombe
Nuhaka
Palaecanthocephala
parameter tags
pendulum generator
percentage reduction of area
pitch selector
platynaspidius babai
premonitorily
pseudosematic color
Punnett square method
radix anterior nervorum spinalium
royl
sayall
shortest distance
Simkara
spearer
starch up
steam cured concrete
strollingly
sulfonated soybean oil
sympolar
tail-in
Taraxacum perplexans
tcheky
temperature indicator
the northwest
Timken Test
topological Abelian group
two-path circuit
unionization
untutoredly
vesicular exanthema of swine
water pheasant
wheat berries
wide angle aerial camera
wubbing
Zacharias