声音相对强度

NOEL KING, HOST: OK. If you listen to the hit podcast Serial, you know the name Adnan Syed. The podcast was about his murder conviction in 2000. But an appeals court in Maryland has backed a decision that vacated his conviction, and Syed might be get

发表于:2019-01-16 / 阅读(53) / 评论(0) 分类 2018年NPR美国国家公共电台3月

SCOTT SIMON, HOST: A year ago, President Trump's remarks about a violent white nationalist rally in Charlottesville sparked outrage. (SOUNDBITE OF ARCHIVED RECORDING) PRESIDENT DONALD TRUMP: You had a group on one side that was bad, and you had a gro

发表于:2019-01-17 / 阅读(42) / 评论(0) 分类 2018年NPR美国国家公共电台8月

Adult ants communicate with pheromones, touch and even sound. Now researchers have discovered that developing ants called pupae have their own distinctive calls, which identify their social status within the colony. This finding is in the journal Cur

发表于:2019-01-20 / 阅读(25) / 评论(0) 分类 Scientific American(二)月

This is scientific American ,60 second science. Im Chris D..ta. Got a minute? In less you have a pair of noise-cancel headphones. Flying can be annoying to the ears. A lot of low-pitch rumbling makes it into the cabin. The problem is ,the wings ,floo

发表于:2019-01-20 / 阅读(128) / 评论(0) 分类 2015年Scientific American(五)月

一篇文章的各个段落之间、各个句子之间都存在一定的逻辑关系,正确理解这样的逻辑关系对于阅读者有着很重要的意义:首先,借助上下文之间的逻辑关系,阅读者能够更好地理解文章大意

发表于:2019-02-13 / 阅读(29) / 评论(0) 分类 大学四六级阅读

Human Echolocators Use Tricks Similar to Bats Many bats use a system similar to sonar to navigate in the dark. They send out high frequency sound, sometimes as clicks, and get information about their surroundings by the timing and quality of the soun

发表于:2019-02-14 / 阅读(37) / 评论(0) 分类 2018年科学美国人3月
学英语单词
achromia parasitica
AMPILAN
aqueductal
ascidiid
assoilzies
automated unit test
bettinson
bilinear programming problem
bioreacter
blanket polity
bombasted
calefactor
calonge
cherbourg peninsula
chrysocladium pensile (mitt.) fleisch.
citrazinic amide
class of business
coefficient of compactness
commercial and industrial representative
common emitter/common-collector bipolar front end
compressibility of sea water
confluent measles
counter-evidence
CW optical maser
diarise
dynamic model
early generation material
edsi
effective deadline scheduling
eka-polonium
enterprise involved in labor reform
exapnsion
fall guy
family papaveraceaes
feerule connector
fenestrate
fingers motion
first-stager
food-relateds
genus melanopluss
Goodenough, Pte.
goods on offer
GP
horse-power loading
hurdleing
hydroturbine model test stand
hyperstoichiometry
IDer
indoor type transformer
intrados
keratocentesis
last meal
lichnoxanthines
low-rise dwelling
Magnavolt exciter
maximal equivalence class
median lethal time
myosin heavy chain
negotious
net effect
Neyman's distribution
non-periodic variation
non-phenolic
nondesensitizing
notice of shipment
octaves
oometer
part-song
particle accelerators
performance of a definite act
protection system for anticipated transient without scram
purple-fringed orchiss
pylochelids
pyrotheriids
regiones cruris lateralis
responsedifference
rinker
Roman building
Sakaigawa
side head
simultaneous row iterations
single-element cask
skin antiseptic
slurry polymerization process
space of irrational numbers
spur-gear lubrication
subtract with borrow
supercritical cycle
sursum vergens strabismus
swell mob
syriac ulcer
take the size of
TB (thermal balance)
theodore roosevelt memorial national parks
underground mining environment
uranium lead method
using pseudo instruction
veliferid
visual meteorological condition (vmc)flight
weapon system directive
wolfqueen
Zeyheria