曲面上的双曲点

Being an American, Donna wants to learn more about the Chinese. She's talking to her Chinese friend, Jeff. D: Hi, Jeff! What's up? J: Nothing much. What about you? D: Same as usual. Here, have a stick

发表于:2018-12-08 / 阅读(294) / 评论(0) 分类 赖世雄中级美国英语

[00:15.96]Devil's Point [00:23.28]恶魔的岬角 [00:32.86]This story took place when I was 19. [00:36.84]In fact my uncle was also 19 at the time. [00:40.92]My uncle and I grew up together in northern Wisconsin. [00:45.58]I don't wish to name the exact

发表于:2018-12-11 / 阅读(131) / 评论(0) 分类 英语灵异故事

[00:15.76]Devil's Point [00:23.29]恶魔的岬角 [00:35.01]Whatever it was couldn't be seen. [00:37.70]The effect of its movement on the environment [00:40.43]could be seen as well as heard. [00:42.69]On a couple of its passes we allowed it to get within

发表于:2018-12-11 / 阅读(138) / 评论(0) 分类 英语灵异故事

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(76) / 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(86) / 评论(0) 分类 地道美语播客

分集介绍:指数,log,对数微分;双曲函数 Exponential.and.log.Logarithmic.differentiation;.hyperbolic.functions

发表于:2019-01-05 / 阅读(371) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

beneath 在美国当代英语语料库统计的20000个常用词中,beneath作为动词的用法排在第1991位, 词义解析: 介词:在下方;到下方 John hid himself beneath the bed. 约翰藏在床底下。 be beneath sb 对来说不够好

发表于:2019-01-11 / 阅读(301) / 评论(0) 分类 英文语法词汇

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(99) / 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(95) / 评论(0) 分类 英语新闻

And thats the first time; it was return black-and-white panoramas of the Venus surface. These images were extremely important, because it was the first time, we ,human beings had a chance to see with our naked eyes completely different other world. W

发表于:2019-02-05 / 阅读(63) / 评论(0) 分类 自然百科2012年

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(122) / 评论(0) 分类 音乐咖啡厅

Look up Sunday to see a truly special cosmic event: A supermoon total lunar eclipse. 周日(9月27日)我们将见证一个特殊的天文现象:超级月亮和月全食同时出现。 Not only will the moon be at its closest point point to Ear

发表于:2019-02-07 / 阅读(98) / 评论(0) 分类 英语新闻

Look up next Sunday to see a truly special cosmic event: A supermoon total lunar eclipse. 下周日(9月27日)我们将见证一个特殊的天文现象:超级月亮和月全食同时出现。 Not only will the moon be at its closest point poin

发表于:2019-02-07 / 阅读(106) / 评论(0) 分类 阅读空间

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(95) / 评论(0) 分类 英语新闻

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发表于:2019-02-19 / 阅读(95) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(110) / 评论(0) 分类 加州英语分级G6

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发表于:2019-02-19 / 阅读(106) / 评论(0) 分类 加州英语分级G6

Now, as we pull down here, we still have a whole set of creatures living on the surface of the planet. 现在当我摧毁这里的时候,在这个星球上其实还居住着一系列的生物, There are all these different dynamics going on here.

发表于:2019-02-21 / 阅读(52) / 评论(0) 分类 TED演讲教育篇

So all that can be said is that at some slightly indeterminate point as we head toward the center of Earth we leave the asthenosphere and plunge into pure mantle. 因此,我们只能说,在前往地球中心的过程中,我们会在某个不大确

发表于:2019-02-25 / 阅读(67) / 评论(0) 分类 万物简史

The distance from the surface of Earth to the center is 3,959 miles, which isn't so very far. 从地面到地心的距离为6370公里。这不算太远。 It has been calculated that if you sunk a well to the center and dropped a brick into it, 有人

发表于:2019-02-25 / 阅读(79) / 评论(0) 分类 万物简史
学英语单词
abandoned blasting
air valve chamber
amount differ
anthropophyte
Arthurian
asgharzadeh
azusa system
Bad Breisig
barnegat b.
batch message processing program
beam-slab structure
big lima bean
bitnesses
borchardts
bright dip
buried aureole
Candle Lake
Comastoma tenellum
common command set
contiguous to
cowberries
diclinous
differential leakage
drolet
dual trust
echoeliminator
endurant
equitable title
et ux
excess of water
fab lab
Fallot, tetralogy of
financial dualism
flat dive
force down prices
Gjelstad Pass
greenhouse pollutant
growth direction
Heminevrin
high-mountain
histoid leproma
Homerian
huyghue
hydrous silicate
inflation-proofeds
isodecyl alcohol
Komo I.
koyaanisqatsi
labyrinth type shaft seal
limited audit assurance
limnophora prominens
link terminal simulator
linkage category I
liquid-gravity differentiation
Litochoro
lymphadenitis colli
maximum voltage
methylpentanolone
modificational variation
narrowleaf meadowrue
nonmotile leukocyte
nozzle with needle
oospira lingchuanensis
otoaudion
pbotomethemoglobin
permission lever
personalizing
phase-locked speed regulation
photosensitive element
pivot spin
placation
placidu
plane of no deformation
projective general linear group
puerperal incontinence of feces
pugilistically
quartz fibre electrometer
rack off
radiosensilizer
refer to sb. as
saltiest
shortage of weight
shovel shaft bearing casing
slab bacon
sodium chloride spring
spatial inhomogeneity
special installation
static deviation
statistic frequency
superbead
t-networks
teledemocracy
telemechanical receiver
thelephoraceaes
thermal stretch
throw-away device
timbertop
triatomics
uncomment
unfleece
wildcatter
zoo plane