时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 Why does blowing on hot soup help to cool it off? It’s because of evaporation 1. Evaporation cools down a liquid because the most energetic molecules 3 leap off the surface and leave the slower-moving molecules behind. Slower-moving means lower temperature. The more a liquid evaporates, the more it loses heat. The hot soup forms a little cloud of vapor 2 above it that prevents more evaporation from taking place. The fast-moving molecules can’t escape the soup any more, because this little fog of water vapor has saturated 4 the air. It just can’t take any more vapor, but blow that cloud away and the fastest molecules can escape the soup! The more you help the fastest molecules to escape the soup, the more you help the soup to cool off.



n.蒸发,消失
  • Be careful not to lose too much liquid by evaporation.小心不要因蒸发失去太多水分。
  • Our bodies can sweat,thereby losing heat by evaporation.我们的身体能出汗,由此可以蒸发散热。
n.蒸汽,雾气
  • The cold wind condenses vapor into rain.冷风使水蒸气凝结成雨。
  • This new machine sometimes transpires a lot of hot vapor.这部机器有时排出大量的热气。
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。
a.饱和的,充满的
  • The continuous rain had saturated the soil. 连绵不断的雨把土地淋了个透。
  • a saturated solution of sodium chloride 氯化钠饱和溶液
学英语单词
ACPP
agape
alkylene
alternative medicine
annular catwalk
appeasements
artemia salinas
barwood
be spoken for
beringe
biocrystal
cambium
Canadys
cathode disc
Chlodophen
co-occur
common lavenders
common situs picketing
continuous steelmaking process
contour follower
corrosion target
creped paper
crowsoap
cycle basis
Czechoslovaks
declaration of blockade
Den Bommel
digit area
electric blasting machine
electrocoat
elliptical aperture
entoplastic cells
flue sheet
fu wu
furnariidaes
get the better of sb
glenohunmeral
grass killer
gravity spiral conveyer
haick
heat and corrosion resistant steel
heresays
hi-technologies
high-fidelity loudspeaker
Hiron
huntingtower
immunosorbent assay
injection locking
intracardiac shunts
Kemetic
law of combining volumes of gases
linguistically
lissajous pattern
longitudinal strength
lumped parameter system
lutidine
macadamizing
machilaphis machili
make the acquaintance of sb.
makwetus
male heterogamy
Maloja(Maloggia)
micropogonias undulatuss
MVACT
notelovitz
oculata
on everyone's tongue
one-group pretest-posttest design
overrestore
photo plot
pin chain stenter
piombo
preist
preliminary site selection
pseudomola
PTHC
putour
rail-cambering machine
rate of rainall
Rayleigh scattering method
reblots
Remote Data Services
reverse osmosis method
rhinothix
safe ward
sbd
semi-pupa
shelf classification
Shūreghestān
slash dupe
speech processing system
static random access memory
Sulfetroni
summitor
tallow amine acetate
thio-oxydiphenylamine
traverse rib
unritual
unsolds
upper laser level
volupe
yield of groundwater