1、Saturn is the second biggest planet inthe solar system.(土星是太陽(yáng)系的第二大的行星。)
2、the solar system also has two analogous classes of objects, smaller than planets—namely, asteroids and comets.(太陽(yáng)系也有兩類(lèi)類(lèi)似的物體，比行星還小——即小行星和彗星。)
3、If we want to survive as a species, we have to expand intothe solar system and likely beyond.(如果我們希望作為一個(gè)物種生存下去，就必須擴(kuò)張到太陽(yáng)系之中或超越太陽(yáng)系。)
4、"And what isthe solar system?" asked the librarian.(“那么什么是太陽(yáng)系呢？”管理員又問(wèn)。)
5、At the heart ofthe solar system is our sun.(位于太陽(yáng)系中心的是我們的太陽(yáng)。)
6、In Astronomy, for example, the distinction betweenthe solar system and the universe wasn't clear until modern times.(例如，在天文學(xué)中，太陽(yáng)系和宇宙兩者的區(qū)別直到現(xiàn)代才被弄清楚。)
7、The spacecraft will enable scientists to study some dark corners ofthe solar system.(太空船使得科學(xué)家可以研究太陽(yáng)系中一些不為人知的角落。)
8、Jupiter, Saturn, Uranus, and Neptune. Those are the gas giants, the four heavyweights ofthe solar system. But was there once a fifth?(木星、土星、天王星和海王星。這些都是氣體行星，是太陽(yáng)系的四個(gè)重量級(jí)。但曾經(jīng)存在第五個(gè)行星嗎？)
9、The surface of Mars shows a wide range of geologic features, including huge volcanoes—the largest known inthe solar system—and extensive impact cratering.(火星表面顯示出廣泛的地質(zhì)特征，包括巨大的火山——太陽(yáng)系中已知的最大的火山——和廣闊的撞擊坑。)
10、Complex life evolved on the Earth's surface, but not on Mars or other planets inthe solar system because on those planets, early surface life was killed by UV radiation.(復(fù)雜的生命在地球表面進(jìn)化，而不是在火星或太陽(yáng)系的其他行星上，因?yàn)樵谀切┬行巧?，早期的地表生命被紫外線殺死了。) hAo86.com
11、They're basically made up of debris left over from the origin ofthe solar system.(它們基本上是由太陽(yáng)系起源時(shí)遺留下來(lái)的碎片組成的。)
12、What is the coldest place inthe solar system?(太陽(yáng)系里最冷的地方在那里？)
13、The map ofthe solar system may be due for a little updating.(太陽(yáng)系的星圖應(yīng)該做一個(gè)小小的升級(jí)。)
14、That, then, is the age ofthe solar system.(那么這就是太陽(yáng)系的年齡。)
15、The picture shows six of the nine planets inthe solar system.(這張圖片展示太陽(yáng)系9個(gè)行星中的6個(gè)行星。)
16、Newton didn't limit himself to explainingthe solar system.(牛頓沒(méi)有固步自封，沒(méi)有僅限于解釋太陽(yáng)系。)
17、I wanna go over the different types of meteorites, and what we've learned from them about the formation of Earth, andthe solar system.(我將介紹隕石的不同類(lèi)型，以及我們能夠從中了解到的有關(guān)地球和太陽(yáng)系的形成的知識(shí)。)
18、They will serve as modern Magellans, mapping outthe solar system for whatever explorers follow, whether man or machine.(他們將作為現(xiàn)代麥哲倫人，繪制出太陽(yáng)系的藍(lán)圖，無(wú)論探險(xiǎn)者是人類(lèi)還是機(jī)器。)
19、Of course, we now know that the planets, including Earth, revolve around the Sun, and thatthe solar system is only a tiny part of the universe.(當(dāng)然，我們現(xiàn)在知道，包括地球在內(nèi)的行星都圍繞太陽(yáng)公轉(zhuǎn)，而太陽(yáng)系只是宇宙的一小部分。)
20、These would vary asthe solar system moves through the universe.(隨著太陽(yáng)系穿過(guò)宇宙，這些測(cè)試也會(huì)改變。)
21、The goal was to measure the AU; then, knowing the orbital speeds of all the other planets around the Sun, the scale ofthe solar system would fall into place.(目標(biāo)是測(cè)量AU；隨后，當(dāng)我們知道了所有圍繞太陽(yáng)的其他行星的軌道速度，對(duì)太陽(yáng)系的規(guī)模就有充分的認(rèn)識(shí)了。)
22、The ancient Greeks believed that what we calledthe solar system was in fact the entire universe, and that the universe was geocentric.(古希臘人堅(jiān)信，我們所謂的太陽(yáng)系實(shí)際上就是整個(gè)宇宙，并且宇宙以地球?yàn)橹行摹?
23、Inspired by Halley's suggestion of a way to pin down the scale ofthe solar system, teams of British and French astronomers set out on expeditions to places as diverse as India and Siberia.(受哈雷提出的確定太陽(yáng)系大小的方法啟發(fā)，英國(guó)和法國(guó)天文學(xué)家團(tuán)隊(duì)開(kāi)始在印度和西伯利亞等地考察。)
24、Ifthe solar system has an underachiever, it has to be Venus.(如果太陽(yáng)系有一個(gè)后進(jìn)生，那一定是金星。)
25、This transformed our view not only ofthe solar system but also of the importance of sending a spacecraft to Pluto.(這不僅改變了我們對(duì)太陽(yáng)系的認(rèn)識(shí)，也使我們意識(shí)到向冥王星發(fā)射飛船的重要性。)
26、It's the largest known vortex inthe solar system.(它是太陽(yáng)系中已知的旋渦中最大的一個(gè)。)
27、The Moon's spin and tilt are unique among other planetary bodies inthe solar system.(月球的自轉(zhuǎn)和傾斜在太陽(yáng)系的其他行星體中是獨(dú)一無(wú)二的。)
28、The space probe, Voyager I, launched in 1977, had sent back spectacular images of Jupiter and Saturn and then soared out ofthe solar system on a one-way mission to the stars.(1977年發(fā)射的“旅行者一號(hào)”太空探測(cè)器發(fā)回了木星和土星的壯觀圖像，然后飛出太陽(yáng)系，執(zhí)行前往恒星的單程任務(wù)。)
29、For more than 300 years, we thought Saturn was the only body inthe solar system with rings.(在300多年的時(shí)間里，我們一直認(rèn)為土星是太陽(yáng)系唯一擁有光環(huán)的天體。)
