評論
打印
nitrogen
n.氮
The Earth's atmosphere, by comparison, is mainly nitrogen, with a fair amount 5 of oxygen as well.
比較而言，地球大氣主要由氮氣組成，氧氣只占5%。
melting-melt
v.融化；溶化
The resulting internal heat keeps what would otherwise be ice melted almost to the surface.
由于內熱，冰會從內融化到表面。
landscape
n.風景，地容地貌
Los Angeles was a decentralized metropolis, sprawling across the desert landscape over an area of 400 square miles.
洛杉磯為“分權”城市，自然景觀跨越沙漠，綿延400公里。
evolution
n.進化，進展
evolutionary
adj.發展的；漸進的
They are an example of a common theme in evolution, the more or less parallel development of different types of body structure and function for the same reason-in this case, for flight.
它們是進化的普通案例，不同身體結構或功能因飛行而平行發展。
eventually
adv.最后；終于
The earliest pterosaurs arose near the end of the Triassic period of the Mesozoic Era, some 70 million years before the first known fossils of true birds occur,
在中生代三疊紀末，早期翼龍異軍突起，這比人類最早知道的鳥類化石早了約7000萬年，
and they presumably dominated the skies until they were eventually displaced by birds.
在最終被鳥類取代之前，它們一直占據統治地位。
distinguished-distinguish
v.區別...；辨認出
Still, the proclivity to play hot distinguished the jazz musician from other instrumentalists.
盡管這樣，傾向于玩熱律的爵士音樂家比其它樂器家更出名。
core
n.爭論的核心，果心
Their composition is thought to he similar to that of Earth's iron core and indeed they might have once made up the core of a large planetoid that disintegrated long ago.
人們認為這一構成與地球鐵芯相似，它們也或曾是小行星的重要核心，且在很久已經就已分解。
composed-compose
v.組成，作曲
composition
n.寫作；作品
composers-composer
n.作曲家，設計者
They are composed of iron and nickel along with sulfur, carbon, and traces of other elements.
除了硫磺，碳等其它元素，該物質還包含了鐵和鎳。
volcanic
adj.火山的
volcanoes-volcano
n.火山
These hominids walked across a stretch of moist volcanic ash, which was subsequently turned to mud by rain, and which then set like concrete.
這些類人動物走過潮濕的火山灰，經過連綿大雨，火山灰變成了泥漿并點燃。
vast
adj.巨大的，非常的
When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes.
當熱量增加，混合物變軟可塑，也可通過各種技藝塑造成各種形狀，大小。
trail
n.痕跡；足跡
When a bloodhound trails a human being, what does it actually smell?
當尋血獵犬追蹤人類蹤跡，它真正聞到了什么？
The human body, which consists of about 60 trillion living cells, sheds exposed skin at a rate of 50 million cells a day.
人體包含約60萬億活細胞，裸露皮膚以每天5000萬個細胞的速度脫落。
renaissance
n.復活，文藝復興
The Harlem Renaissance, a movement of the 1920's, marked the twentieth century's first period of intense activity by African Americans
20世紀20年代，哈萊姆文藝復興運動是非洲裔美國人本世紀第一次“激烈活動”，
in the field of literature, art, and music in the United States.
領域涵蓋文學、藝術以及音樂。
religious
adj.宗教性的
religion
n.宗教；宗教團體
The eighteenth century had seen a gradual shift away from the spiritual intensity of earlier American religious writings for children, toward a more generalized moralism.
美國早期兒童宗教寫作從18世紀起逐漸淡化，而逐漸向廣泛的道德主義發展。
reactions-reaction
n.反應
react
v.對...做出反應
As the children's book market expanded, then, what both public and publishers wanted was the kind of fiction Maria Edge worth wrote:
隨著兒童讀物逐漸擴展，公眾和出版社想要看到的是瑪利亞·埃奇的科幻小說，
stories interesting enough to attract children and morally instructive enough to allay adult distrust of fiction,
故事足夠吸引兒童注意力，道德教育意義也足以讓成人對科幻恢復信心，
American reaction against imported books for children set in after the War of 1812 with the British.
自1812年美英戰爭后，美國開始反對英國進口兒童讀物。
