时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 “Probably all, or nearly all, who have experienced a cold winter, are familiar with the cheery cry of the snow as it is pressed against a hard surface by the steel tire of a wagon 1, for instance, or even onto a pavement by the heels of one’s boots.” Those words were written many decades ago by the physicist 2 W.J. Humphreys in a book called Physics of the Air. Humphreys went on to suggest that creaking of snow is connected with very cold temperatures. Humphreys said that when the temperature is just below freezing and snow is easily packed into snowballs, footsteps and rolling wheels won’t create much sound. His reasoning is based on the fact that applying pressure to ice lowers its melting temperature. If ice is so warm that it’s about to melt anyway — say, at a temperature of 30 or 31 degrees Fahrenheit 3 — then a little pressure will be all that is necessary to melt it.



n.四轮马车,手推车,面包车;无盖运货列车
  • We have to fork the hay into the wagon.我们得把干草用叉子挑进马车里去。
  • The muddy road bemired the wagon.马车陷入了泥泞的道路。
n.物理学家,研究物理学的人
  • He is a physicist of the first rank.他是一流的物理学家。
  • The successful physicist never puts on airs.这位卓有成就的物理学家从不摆架子。
n./adj.华氏温度;华氏温度计(的)
  • He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
  • The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
学英语单词
accorsi
all kind of
alliable
angle of heel in turn
antifix
apin
autohand
aviso boat
batisse
behedge
bioinequivalence
caudectomy
closed bay
co-payments
Coca-colonise
cognitive rationality
continuity test
conversion electron spectroscopy
correction for direction
cradle-to-cradle
darkin
debt-freest
Delfim
dika nuts
Diplobechnum
direkts
electric tape
employment relationship
Euphorbia splendens
eyefold
eynshams
farm-carts
flash annealing
foreros
forizzle
function code
general interference
generalized hookes law
genus Millettia
gerli
Goodpasture syndrome
granulocyte-macrophage colony
guard plate
hawpe
heavy lap
Helen Adams Keller
horizontal sweep amplifier
hrvatskas
inorganic fiber paper
ion mobility
irregular doublet
leakage interception vessel
leek moth
lindorm
louder pedal
maoyancaosu
mathematical sedimentology
micro cuvette
minirebellion
model plastic
monooxygenase
mottling of rice plants
multi-centrism
multiple-degree-of-freedom mechanism
neckbeards
nine-piece
on the front
onsager reciprocity theorem
operculate coral
parulids
persi
plain(-)paper copier
preselected scrap
puppy disease
quenching die
Refined coal
restreak
runestones
saddle type grip
sakamaki
Salix suchowensis
saltbushes
screw cup
secret gutter
sextennially
simple myopic astigmatism
slaps around
solid state quantum electronics
spaceflight skill training
steel flat
submarine transmission cable
tardas
Thyrsopteris elegans
traumatic events
triboelectric double layer
unconsoling
unilateral trade
until tomorrow
valyev
waste-heat utilization
wer-
windings