音标:[,krəumə'tɔɡrəfi] ;
柱层析法;[分化] 柱色谱法

Staircase Intonation So what is intonation in American English? What do Americans do? We go up and down staircases. We start high and end low. Every time we want to stress a word or an idea, we just start a new staircase. That sounds simple enough,

发表于:2018-12-02 / 阅读(106) / 评论(0) 分类 美语口音训练第一册

[00:00.00]Unit 2 第二单元 [00:06.95]Exercise 1 练习一 [00:10.79]Listen and write the words in the correct column. [00:14.79]these [00:20.14]year [00:26.70]like [00:32.94]minute [00:39.63]Chinese [00:47.28]red [00:53.19]ear [00:58.54]pen

发表于:2018-12-12 / 阅读(45) / 评论(0) 分类 新标准小学英语活动用书6册(一年级起点)

[ti:UNIT 1 A Trip to Beijing Lesson 8] [0:01.395]Unit 1 [0:03.426]A Trip to Beijing [0:06.318]Lesson 8 [0:08.234]Unit Review [0:10.902]Ⅰ. [0:12.257]Building Your Vocabulary [0:15.151]A. [0:16.433]Fill in the blank with the proper word. [0:19.751]Th

发表于:2018-12-13 / 阅读(129) / 评论(0) 分类 河北教育初中英语(初中起点)七年级下册

Unit 7 How do you make a banana smoothie? [00:04.99]SECTION A [00:07.92]1b Listen and put the instructions in the correct order. [00:55.14]2a Listen to Maria and Katie making fruit salad. [01:02.41]Write the names of the ingredients under Now much or

发表于:2018-12-13 / 阅读(138) / 评论(0) 分类 新目标初中英语八年级上

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(65) / 评论(0) 分类 Scientific American(八)月

MARY LOUISE KELLY, HOST: On page A23 of today's Washington Post you can find the last column Jamal Khashoggi wrote before he disappeared. Khashoggi went missing on October 2. It looks increasingly likely that he is dead, a reality President Trump ack

发表于:2019-01-17 / 阅读(58) / 评论(0) 分类 2018年NPR美国国家公共电台10月
学英语单词
aaby
abrami
absinthe
Adpirin
american port risk clauses
angular rate
Ansted
arcoscalpellum truncatum
atomic-absorption spectrophotometer
automatic standard magnetic observatory
bacterial inclusion
basihyal bone
batting
bellowsfish
beyond sea s
bloemspruit
bluebreast
branchings
carbon emission
category of commutative rings
Celtis labilis
ciceroes
colonizationist
condenser circuit
conversion parameter
cross bow
cross-inlet water turbine
customer set-up product
Cyesiophobia
defriends
density of soundings
doormakers
duodenocystostomy
duplex universal joint
EACU
El Guabal
electron cyclotron resonance
embryogenetic process
Erba
euphausiids
extremely inverse current relay
facial panel
fallaciloquent
family practitioners
flymen
free coinage
gas lamp
goat's milk
granolite treatment
hepatic mercury(mercuric)ore
higher-order ordinary differential equation
hold something up to mockery
horseradish peroxidase method
intranet server
Kādhimain
logical atomism
looking after view
low-riders
mesocyclonic
metals/financial
metaseds
milleme
Mniszek
modern typeface
modify structure
Moggar
monomethyluric acid
multiplestand
natural scale
nilrepresentation of a Lie algebra
nitrogen gas disease
noctuidaes
norite bronzitite
one-goals
ozma project
pappies
parallel session
processing program table
pyridinemethanol
questionnaires method
raggedy-ass
Rawka
regenerator kiln
reversed de Laval nozzle
ruffed canal
running distance
shloka
soft-seat
spoon needle
stare in the face
steel-clad rope
superorder labyrinthodontas
syneclise
tofuburger
training need
untelevised
vegetable life
vehicle magnetic detector
vernal equinoctial tide
wild colony
yellow sugarcane aphid
zero dark thirty