初期富集作用

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Fingers are pretty nifty. They let you to grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?

发表于:2018-12-24 / 阅读(67) / 评论(0) 分类 Scientific American(九)月

dawdle /'dɔ:dl/ My sister dawdles over the dishes. Mother gets them done without wasting time. -- waste time; loiter; idle ﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌ vi. 浪费时间;闲荡 我妹妹洗起盘子来慢

发表于:2018-12-30 / 阅读(68) / 评论(0) 分类 突破英文词汇

Of the two, Cope's scientific legacy was much the more substantial. In a breathtakingly industrious career, he wrote some 1,400 learned papers and described almost 1,300 new species of fossil (of all types, not just dinosaurs)more than double Marsh's

发表于:2019-01-29 / 阅读(43) / 评论(0) 分类 万物简史

Hmm, my, you should take this to the security guards, hmm, theres quite a bit of cash in here, yes, the man wears thick glasses and peers at Henry through them as he speaks and Henry reaches around under the mans jacket and steals his wallet. Since H

发表于:2019-01-29 / 阅读(44) / 评论(0) 分类 时间旅行者的妻子

Meet Chihira Junco, a tourist greeter at a shopping mall in Tokyo. 来见见地平Junco(Chihira Junco)吧,她是东京一个购物中心的游客迎宾员。 In her crisp blue button-down shirt, white blazer and pinstripe skirt, she stands in sensi

发表于:2019-02-18 / 阅读(45) / 评论(0) 分类 英语新闻

TEHRAN, Aug. 15 (Xinhua) -- Iran said on Sunday it will not stop its nuclear fuel enrichment(丰富,改进) activities although Russia would provide it with the nuclear fuel needed to run its Bushehr nuclear power plant. Head of Iran's Majlis ( P

发表于:2019-02-18 / 阅读(45) / 评论(0) 分类 英语新闻
学英语单词
advertising agency
affectible
alforja
anergasis
aneurysmograph
apical space
apply work
associateship
AutoFF
back lapping
between-deck
bissome
boiler indirect heat balance test
brainerd
cable sheathing alloy
caeco-colic fold
catilina
collagenolysis
color management module
contractor report
conversationalize
Coules
cranial fossa
Csosz
death struggle
decubitus
derating
directivity function
entry name attribute
epididymal branches
epidote amphibolite
escape with life and limb
faux-pearl
Fenoprex
FIFR
Gamprin
gas washing plant
great exposure
grey cylinder felt
guidance sensitivity
habitus index
Hellespont
hypatmism
inactive state
incomplete lubrication
isophonic contour
ITS (in-tank-solidification)
junketers
kaiserdoms
lenticular apperture
Lespedeza tomentosa
liliosideA
local insurance company
luders' line
marad
matrix drive pulse
metamathematics
metamorphic plot
millineress
monooxygenase
multiple-wave interferometer
myelomyces medullary carcinoma
Ndoyène Dakhar
nelis
oar handle
opportunisms
output limiting facility
oxofangchirine
pain
partial Latin rectangle
plasmology
pledge against a loan
promonoblast
Publ'g
put oneself in someone's position
quasi-polar sun-synchronous orbit
race memory
releaser phermone
reverse movement
Scorff
semi-automatic private branch exchange
sheepwalks
skirt plate
slashzines
source label
South Carolina, State of
steranes
Succinyldicholine
superconducting quantum interference device (squid)
team training
technol
tepat
terrestrial movement
thesaurary
three-axis magnetometer
triangular guide
trichlorides
twelveish
vernier zero
vinegar meter
working space register number
WS-ReliableMessaging