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(346) / 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(189) / 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(195) / 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(131) / 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(141) / 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(428) / 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(356) / 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(146) / 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(150) / 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(110) / 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(168) / 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(153) / 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(153) / 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(141) / 评论(0) 分类 英语新闻

图片1 图片2

发表于:2019-02-19 / 阅读(152) / 评论(0) 分类 加州英语分级G6

图片1 图片2 图片3 图片4 图片5

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

图片1 图片2

发表于:2019-02-19 / 阅读(157) / 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(92) / 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(109) / 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(131) / 评论(0) 分类 万物简史
学英语单词
a loaf of bread
additionally
adsum
articular rete
Asset-or-Nothing Call Option
banrhea fibre
beat a retreat
Benn
bidding up
binge-eatings
bitter cherry
broshe
burro creek
buttress stiffening cross wall
Calvatia gigantea
cardiac basal segment
chalcid wasp
chase sb up
chiliagons
clapping magnetic system
collective experience
contact time distribution
coppice-wood
cortex aurantii dulcis
couner force
cut-under
dell.com
dinitrophenylhydrazones
disco dance
drowned rat
dry-wet bulb hygrometer
electrobath
eulogise
every last
fibre blend
first-pitch of coil
functional form of linear function
golite
harbor surging
human interest
hygrechema
hyperkinesthesia
immediate address mode
inenition
lateral longitudinal stria
law philosophy
legendaires
ludgas
magnetite peridotite
make break operation
mean position
mercury float manometer
missourians
Montebelluna
myotonus
non-protein nitrogen (npn)
nonogesimal point
nothingism
nuptial rites
occupational accident
osmotic water
osseous semicircular canals
paving stone degeneration of retina
physical fact
pileiform
pillbug
pipunculus (eudorylas) pallidiventris
piston tube nut
platinum compounds
pozzuolan
provocation test
quantitative relationship
recordlike
reinforced concrete penstock
rethaw
ridged band
Rondase
same wavelength
seaways
Seba Beach
servitutes praediorum
Shackleton Ice Shelf
shady egg
skimming chamber
sneeze gas
solid carburization
Someone's number comes up.
Sotae
standard involute gear tooth
strap-wound coil
supercentrifugal
sweet acacia
synchondroses sacroiliac
thick-film lubrication
tiffin
Ubuyama
un-make
unforgivingnesses
unformed
unvizarding
versetamide
Walrasian