十二星座最爱之旅行目的地

aries （mar. 21- april 20） argentina， cambodia， ethiopia， guatemala， ireland， luxembourg， san francisco， spain 阿根廷、柬埔寨、埃塞俄比亚、危地马拉、爱尔兰、卢森堡、旧金山、西班牙 taurus （apr. 21-

求助英语会话48

[00:02.87]Useful Expressions [00:03.81]常用语句 [00:04.75]1.Cheap things are not always good. [00:07.52]便宜的东西不见得都是好货。 [00:10.29]2.It takes a long time to learn English. [00:13.45]学英语要花很长时间。 [00:16.61]3.I couldn't buy it anyway.

开动右脑记单词(四级)--普通单词 06

[00:05.32]garbage:n.垃圾，废物，废料 [00:07.31]gasoline:n.(美)汽油 [00:09.42]geometry:n.几何，几何学 [00:11.43]glory:n.光荣，荣誉 [00:13.36]grammar:n.语法，语法书 [00:15.30]graph:n.曲线图，图表 [00:17.12]grave:n.坟墓

北师大版高中英语模块7--Unit 20 workshop4

[00:02.27]The most recent probe to be sent [00:04.29]was the Mars Odyssey launched in April 2001, [00:07.98]which is due to orbit the planet [00:09.52]and provide communications [00:10.96]for future explorations. [00:13.62]Another period of great int

电视英语口语教材 第二十二课

[00:00.00]Lesson 22 [00:01.58]第二十二课 [00:03.16]Tourism [00:04.55]旅游业 [00:05.93]Modern means of transportation,communication,advertising and credit have all played a part in the growth of a giant new industry,tourism. [00:12.11]现代交通

这句英语怎么说第170期:走遍世界的旅游格言

I would rather own little and see the world than own the world and see little of it 我们宁愿拥有少一点也要去旅行

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—31

Our galaxy is rushing toward the great galaxy Andromeda, they are rushing toward each other. And they are going to encounter each other in a couple billion years. Abraham and his colleagues decide to try to simulate this clash of the Titans. This was

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—29

And every faint smudge of light you are looking at is a galaxy. For Richard Ellis, it's a galactic treasure trove. So much like an archaeologist/, we piece together history by digging into deeper and deeper layers. So a cosmologist like myself, uses

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—30

We've transported the earth 3 billion years into the future. The sky is dominated by a massive galaxy called Andromeda. The view looks peaceful enough. But whats about to happen is one of the greatest calamities in the universe. The clues lie in thes

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—32

A new galaxy is formed where, instead of the discs that the original galaxies have, where all the stars are going around more or less on a plane. Instead the stars are going every which way just like the elliptical galaxies that we see. And so we are

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—33

Venus is closer to the Sun, Mars is farther from the Sun. And there is a zone in between, the blazing hot furnace Venus, the frigid Mars. That zone in between we call a habitable zone and the earth lies smack in that thing where water would be in liq

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—34

One type of giant planet orbits very close to its star, we call them hot Jupiters because these Jupiter-like planets are so close that they are blowtorched by the intense heat from the star. The other sort of planet we have found is also bizarre. Wev

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—26

So what we are looking at is a region about 200 million light years across which is actually just a small part of our really big simulation that we call Bolshoi which is Russian for big. Everything that you see here is actually completely invisible.

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—25

What happens is that, first the dark matter forms the structure, the ordinary matter then follows the dark matter. The ordinary matter is hydrogen and helium at this stage. And the hydrogen and helium fall/ to the center of the dark matter halos that

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—24

Its extremely frustrating because this region, this time period holds within it, in some sense, the rose headstone of / galaxy formation. But there are clues as to what was happening inside those dense hydrogen clouds. Look back even further in time

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—23

But dark matter does more than simply holds galaxy like ours together. Astronomers think it binds the Milky Way into an extraordinary structure along with billions of other galaxies. To explore it, we'll take a journey to the very edge of the univers

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—22

All of the galaxies, all of the stars, and gas and dust and planets, and everything else that we can see with our greatest telescopes represent about half of one percent of whats actually/out there. The rest is invisible. It is mostly some mysterious

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—20

They were once thought to mark the outer limits, but today astronomers believe the Milky Way galaxy is much bigger than what we can see. To understand why, we will travel to the stars of the outer galactic disc. Far from our usual place in space, we

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—10

To understand how these calamities occur, astronomers need to catch a massive star in its death throes. Astronomers are like detectives. We have to figure out what's going on in the universe, sometimes based on a minimum number of clues. And in the c

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—11

Once theyve caught the light of a dying star with their state of our telescopes. The detective work can begin. We collect that light and we analyze it in great detail in order to determine whats going on, whats the chemical makeup of the star, whats