硫还原菌

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is abo

发表于:2018-12-01 / 阅读(142) / 评论(0) 分类 新东方背诵文选

This is Scientific Americans 60-Second Science, Im Christopher Intagliata. Got a minute? Last month's salmonella outbreak got over 1,500 people sick. And one reason salmonella may be such a heavy hitter is that it actually hijacks our immune response

发表于:2018-12-24 / 阅读(34) / 评论(0) 分类 Scientific American(九)月

The divers started in the ocean, but they are now within solid bedrock, 150 feet beneath someone's living room. They are now swimming in the water supply for the town above. Here they find, as they had hoped, life in the pitch darkness. These are hyd

发表于:2018-12-26 / 阅读(43) / 评论(0) 分类 自然百科2009年

But methane is actually odorless, too. 但是甲烷也是无味的。 Well then, what stinks? 那么,什么东西这么臭? The foul smell is usually due to volatile sulfur compounds, such as hydrogen sulfide and methanethiol, or methyl mercaptan

发表于:2019-01-17 / 阅读(61) / 评论(0) 分类 TED演讲教育篇

We now know that there are a lot of microbes living deep within the Earth, many of which have nothing at all to do with the organic world. 我们现在知道了,有大量微生物生活在地球内部的深处,其中许多与普通的有机世界毫

发表于:2019-02-17 / 阅读(24) / 评论(0) 分类 万物简史

This monster of a crocodile is Lolong. He's blamed to have killed two people in the southern Philippine town of Bunawan, and was captured after a three-week-long hunt in September last year. Measuring 6 meters and 17 centimeters or 20 feet and weighi

发表于:2019-02-18 / 阅读(97) / 评论(0) 分类 英语新闻视频
学英语单词
amplitude constraint
Andreaeales
ANISOMETR
audio fader amplifier
background interference
be too weak to develop well
beer well
bet-ter
bioenergetic inhibitors
branch stub
chamber music
charge on
checkout rack
Chelonopsis siccanea
chemostat
Chirripó, Cerro
chondrophyma
chrissakes
Cochlianthus montanus
compulsory counter claim
contaminated prior distribution
contraction hypothesis of the earth
contrafactum
deferred repairs and maintenance
dibutene
discharging time
dispatch algorithm
distress telex calls
dysgenics
electrical acupuncture anesthesia
ethylidene difluoride
first-order asymmetric transformation
flunkie
fluticasone
focusing conditions
formicivorous
fuckloads
galeries
geographic race
glyoxalic acid hydrate
GVHR
heat exposure threshold limit value
hexagonal close packed structure
hot-drawn
inefficient type
isotopic level gauge
lacustrine soil
leucadendron
lick the boots off
made a search after
manhole cover
Mattole
mean solar semi-diurnal constituent
mis-see
mystagogs
needle furze
no-coat chip
non-associative
nondegenerate system
notopleural bristle
Nāndod
pass trestle
Patamute
perceivability
postsphygmic
pseudochdinesterase
pulse decoder
quickcutting
quoiffure
Rami pharyngeales
rasbeck
refractory dress
renopathies
righteouser
rock loading conveyor
sea walnut
self-evident code
shengdan
single instruction execute
skeptical
spray flow rate
standard column of water
strengthening piece
subcontractings
subulurids
supplementary call
Susques
symbolic atom
thelymania
thick split thicknessfree skin graft
time plot
Tosaki-bana
traumatic appendicitis
TROGIDAE
tsataensis
undeeded
ungratifying
variant process planning
velocity estimation
voluntary (volunteer) leader
weaboo
yoshina