杀菌值

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e

发表于:2018-12-24 / 阅读(193) / 评论(0) 分类 Scientific American(六)月

LULU GARCIA-NAVARRO, HOST: It's summertime. And if you have a young kid, chances are they're covered in a film of sweat and dirt. It can be kind of gross. We went to New York Avenue Park in Washington, D.C., and asked parents how comfortable they are

发表于:2019-01-16 / 阅读(193) / 评论(0) 分类 2017年NPR美国国家公共电台7月

They dive in, feet first, tasting food with sensors on their feet. Once they've selected a mouthful, they'd salivate over it, eat it, then regurgitate it to break down any chance. They then suck up the foul soup they've made with their spongy mouth p

发表于:2019-01-22 / 阅读(172) / 评论(0) 分类 自然百科2013年

Juanita: Hey, where have you been? I was going to invite you to lunch, but you werent at your desk. Bill: I was at a training. Juanita: What was it on? Bill: Office hygiene. Juanita: Hygiene? Youre kidding. Your office is pretty messy but I wouldnt s

发表于:2019-02-11 / 阅读(239) / 评论(0) 分类 地道美语播客
学英语单词
across-the-curriculum
actuation threshold
air regenerative type
angular scattering function
aperture of oil chamber
blastopore lip
blurbists
boat mounted acoustic location device
bocconias
bon sior
Boulay-Moselle
brunso
bythocythere convexidorsa
candidness
categised
cerumen
chafing check
classified frequency series
close in fueling rig
closure strip of felt
cobble
common source gather
contact length
contactless ring
cornballs
corrosion prevention by galvanic polarization
cryptonymies
dibb
distillation with reaction
distortion of optical image
drain series resistance
electrical drilling machine
enamel lined pump
environmental pollution control technique
figure velvet
film healing
fisking
foreign exchange service
Great Barrier Island
heart wood sleeper
helping hands
HFBR
hirundo rustica saturata
hydraulic efficiency servo-valve
hydraulic efficiency starting
hydrolysis reaction
inscicioun
interformational sliding
kolor
liongs
lipped angle
loss of the private right
mana-wove
Meccanized
medial occipitotemporal gyrus
meertens
microforce
mighthead
myometritis
Nasemo
neo-Hellenic
nice boat
nonexercise
nonprimary economic activity
Paasche-Konyus index
pay secrecy
Pilea bambusifolia
plica interureterica
propeller shank
pump and dump
rake
Ramalho, Sa.do
revisee
rifle powder
roller carbon black
rotor slot wedge
rough-legged buzzard
rust
scansioning
Shuya
slack thread regulator set screw
somatic mesoblast
still camera
subcutaneous fatty tissue
subtalar joint
SYAU
szymanski
tensor impedance
totally unbalanced currents
trigonometric structure
undwelt
uneconomically
unreinforced surface
up-station
vapor deposited case
velipend
wadger
well-tolds
wide gauge
work order
xizangs
y-match