非天然同位素成分

87 natural resources words coal metal iron ore oil water precious metal diamond export import refine mine mining miner drill(ing) engineer supply infrastructure wood stone pure natural aluminium oil well phrases drill for oil explore for oil discover

发表于:2018-11-27 / 阅读(283) / 评论(0) 分类 情景英语口语100主题

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest

发表于:2018-12-24 / 阅读(137) / 评论(0) 分类 Scientific American(九)月

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 knowledgeable [ 5nClidVEbl ] He made s

发表于:2018-12-30 / 阅读(126) / 评论(0) 分类 每日攻克5词

The students in the composition class were assigned the task of writing an essay on the most beautiful thing I ever saw. The student who, of all the members of the class seemed the least sensitive to beauty, handed in his paper first with astonishin

发表于:2019-01-02 / 阅读(119) / 评论(0) 分类 英文笑话

It was a very busy evening. I was doing my homework at my home. My father was writing a composition in the study room. My mother was interested in Shanghai opera. She was watching a Shanghai opera contest. The apartment was very quiet. Suddenly the l

发表于:2019-01-03 / 阅读(117) / 评论(0) 分类 英语作文

The script of this programme 本节目台词 Face to face with dinosaurs at the Natural History Museum Sun Chen: Where are we? This place is like Jurassic Park. 这个地方,怎么那么像电影侏罗纪公园啊? Neil: That's true. Welcome to On the Town from BBC Lea

发表于:2019-01-06 / 阅读(180) / 评论(0) 分类 都市掠影

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar

发表于:2019-01-08 / 阅读(138) / 评论(0) 分类 Scientific American(一)月

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

发表于:2019-01-08 / 阅读(124) / 评论(0) 分类 Scientific American(十二)月

Song:100% Natural Artist:Alsou Natural Oooh, yeah At the the centre of me, baby would you believe That I am everyything that I was born to be Why would I cover up What comes natural enough I have everything that god has given me I won't hide, who

发表于:2019-01-11 / 阅读(142) / 评论(0) 分类 英语热力歌曲

Scientists Closer to Solving Plain of Jars Mystery A new group of human remains has been uncovered on the Plain of Jars in Laos. They are believed to date back to the Iron Age, some 2,500 years ago. The Plain of Jars is in the central Lao province of

发表于:2019-01-12 / 阅读(118) / 评论(0) 分类 2016年VOA慢速英语(三)月

(1) We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-02-12 / 阅读(121) / 评论(0) 分类 实用英语

Compston's machine allowed such rocks to be dated with unparalleled precision. 康普斯森的仪器能以无与伦比的精确度测定这些岩石的年代。 The prototype SHRIMP was built and machined in the Earth Science department's own worksho

发表于:2019-02-17 / 阅读(129) / 评论(0) 分类 万物简史

(1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abi

发表于:2019-02-18 / 阅读(128) / 评论(0) 分类 英语口语

1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-02-18 / 阅读(120) / 评论(0) 分类 英语学习方法

提高英语口语的方法 (1). We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to

发表于:2019-02-19 / 阅读(111) / 评论(0) 分类 英语学习方法

高效的英语口语学习方法 口语学习方法总汇,但方法毕竟只是方法,它最终无法取代刻苦的学习,一起来看看总结出来的口语学习方法都有哪些吧。 (1)。We study spoken English so as to make oral comm

发表于:2019-02-19 / 阅读(187) / 评论(0) 分类 英语学习方法

英语口语的学习方法 方法就是方法,它最终无法取代刻苦的学习。 Oral English:(口语学习方法总汇) (1)。We study spoken English so as to make oral communications, so this order of importance of oral English

发表于:2019-02-19 / 阅读(141) / 评论(0) 分类 英语学习方法

妙招学口语(下) (6)、Oral composition and 3-minute training method: This method is suitable for intense training. Making an oral composition about a certain topic for one minute thefirst time and record the composition on tape at the sameti

发表于:2019-02-26 / 阅读(123) / 评论(0) 分类 英语口语

(1).We study spoken English so as to make oral communications, so this order of importance of oral English study should be followed: Fluency, Accuracy, and Appropriateness. That is to say, we have to pay more attention to practical communicating abil

发表于:2019-03-02 / 阅读(162) / 评论(0) 分类 英语口语

小学英语写作范文:感恩父亲 Dear Dad: You have worked hard! In the past, I am always afraid to you and positive dialogue. Every time something was always afraid to tell you. Because when you face the total serious. Today to take this oppo

发表于:2019-03-17 / 阅读(1639) / 评论(0) 分类 英语作文
学英语单词
a rock
aluminum alginate fiber
anterior superior polioencephalitis
aphidius gifuensis
Arauquita
auxiliary feed system
be confused
bell burnell
beta centauris
Bipole-S
bleeder circuit
business rules
button-head screw
ccjc
Cliff notes
Coast Salish
colombine
conybeare
crack performance
dagger-like
dark etching
data freight receipt
data specification for data directed transmission
delayed silicosis
descrive
disintegrate
dissociative disorder
distilling system
Dollar price of a bond
double deck passenger car
Drφbak
effigy
electron negative atom
encephalo-malacia
Equisetum robustum
establishment of diplomatic relations
Euonymus percoriaceus
FCGP
forward oblique air photograph
Gandwanaland
gas peak
ginthers
glucokinase
Gryadtsy
hatefuck
hoary with age
hydrocolloidal impression material
insufficient or excess reinforcement of weld
jacobson's gland
Kartvelologist
left outboard
loading frame
make money fast
make out to
malebranches
malicamide
mandoes
Mannesmann mill
masheen
model based analysis
molapo
morphol.
morris hepatoma
MRD-108
myxosporidiasis
neubers
osculating plane
overstructured
oxidation flame
pachydermie et pachyperiostosis
papilloma of bronchus
picoplankton
pod test in green house
positive print
proofless
prunus ssiori fr.schm.
pseudodomain
puberty wall
quite entire
recruitment
regular primes
San Justo, Pto.de
scamperers
self-optimizing automatic pilot
sheenah
shereen
shirking
sit down and do sth
spinnbarkeits
sprent
stone slab
stuck up
swithins
syrupus pini
tapped me
thin film superconductor
treat with
unsolicited response
Vittinge
worth their salt
zero crossing time pick-off
zinced