[数] 开黎曼面

Humpback whales. During the brief summer they gorge themselves on krill. When the krill swarms are near the surface, the humpbacks collect them by lunging . They simply open their cavernous mouths and

发表于:2018-12-07 / 阅读(125) / 评论(0) 分类 冰雪童话

MICHEL MARTIN, HOST: Mars is about to get a new visitor from Earth tomorrow. If all goes well, a NASA probe called InSight will land near the Martian equator. Its mission is to study the interior of the planet. But, before it can carry out its missio

发表于:2018-12-18 / 阅读(139) / 评论(0) 分类 2018年NPR美国国家公共电台11月

地道美语听力播客English as a Second Language Podcast (ESLPod),是一家位于美国加州洛杉矶的英语教育研究机构推出的英文听力会话,于2005年7月23日首播, 主播Dr. Jeff McQuillan为南加州大学的语言学博士

发表于:2019-01-01 / 阅读(151) / 评论(0) 分类 地道美语播客

Our chemistry, our very nature, our metabolism is completely shaped by the atmosphere. To appreciate our atmosphere, well rise through its layers, travelling from the planets surface, miles up above mountains and the clouds, to the very edge of space

发表于:2019-01-23 / 阅读(116) / 评论(0) 分类 探索与发现2014年

The National Oceanic and Atmospheric Administration (NOAA) confirms that some of the oil escaping from that ruptured well in the Gulf of Mexico is staying beneath the surface, raising new environmental concerns about the disaster. BP says there is no

发表于:2019-01-30 / 阅读(158) / 评论(0) 分类 VOA标准英语2010年(六)月

Climate change negotiators from 173 countries have agreed on an agenda after days of bickering over the scope of talks left little time for substantive discussions. The disagreement highlighted deep divisions between developing and rich countries on

发表于:2019-01-30 / 阅读(159) / 评论(0) 分类 英语新闻

Marit Larsen 从那个红遍全球的少女组合M2M里走出来的Marit Larsen并没延续M2M的流行摇滚,而是选择了清澈的民谣曲风,用她时而俏皮时而的甜蜜的嗓音来吟唱她自己写的小曲儿,带给听者如沐春风的清新感觉。 中英歌词: It's such a funny sensation to be so happy that

发表于:2019-02-06 / 阅读(181) / 评论(0) 分类 音乐咖啡厅

LOS ANGELES, June 18 (Xinhua) -- Microsoft Corp. unveiled Monday a family of tablets dubbed Surface, built on Windows 8, at an event in Los Angeles. Microsoft Chief Executive Steve Ballmer introduced the company's Surface family of tablets. The devic

发表于:2019-02-17 / 阅读(151) / 评论(0) 分类 英语新闻

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发表于:2019-02-19 / 阅读(186) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(180) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(188) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(167) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(183) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(172) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(165) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(169) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(169) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(179) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(165) / 评论(0) 分类 加州英语分级G6

Disputes and reorderings of much the same type can be found in all the other realms of the living, 同样的争吵,同样的重新分类,也发生在所有别的生物领域, so keeping an overall tally is not nearly as straightforward a matter

发表于:2019-03-17 / 阅读(411) / 评论(0) 分类 万物简史
学英语单词
.ace
adelbert
agnathous, agnathic
air analysis
all-conference
assistant referee
benign familial chronic pemphigus
Bisayas
biscromial
bona gestura
Bonefeld
Bonne Espérance
book block
bulge of a curve
car air conditioner
carbon containing compound
charpy impact-testing machine
climatic soil type
comboloios
common ashes
copper asbestos gasket
corrosion rim
decloaked
dero digitata
dhobie itch
dominant ovarian follicle
Dysophylla yatabeana
electronic voltage regulator
elkarri
emancipation
enucleation spoon
escape learning
Eurosceptical
evil tidings
fallout area
film super-small variable capacitor
flip horizontal
frame lines
galileo galileis
gomm
granular applicator
greenlake
Grove Point
hellauer
high vacuum seal
hydroxyindol
hyperbolic position fixing system
improverishment
key to tape
le brun
left sided system
long-grains
lowpass noise
maenaite prophyry
marble
market research department
mastoplasty
medical commentary
multi-core cable
mutuel
neckera pennata (l.) hedw
Neritidae
net noncash
new record
Niavežis
non-centrality
nonpropaganda
open end wrench
overreport
oxy arc cutting
pedals
Pentamethonium
Phycosecidae
piltocks
practice-based
pseudosculum
rainy lake
remittance basis
resorters
Samoyedic-speaking
sand seam
seizor
shift differential
size consistency
sleeping
sodium chloroacetate
sodium metantimonite
solen luzonicus
special process
station interrogation
steady state frequency control
stuntwork
swamp fire
synchysite- (nd)
Thucydidean
Tigridiopalma magnifica
transglucosylase
Ubatuba
upper connecting rod
ureteric stone
urofsky