評(píng)論
打印
scale
n.刻度；天平；鱗
The same thing happens to this day, though on a smaller scale, wherever a sediment- laden river or stream emerges from a mountain valley onto relatively flat land,
類似事件如今也時(shí)常發(fā)生，不過規(guī)模相對(duì)較小罷了。當(dāng)攜帶沉積物的河流或溪水從山谷而下，流至相對(duì)平坦的地面時(shí)，
dropping its load as the current slows: the water usually spreads out fanwise, depositing the sediment in the form of a smooth, fan-shaped slope.
砂石便隨著流速減慢而逐漸沉淀：水流通常呈扇形蔓延，進(jìn)而使所承載的砂石以光滑扇形的斜面形式沉積下來(lái)。
root
n.根 v.生根
They spend more energy on their leaves, trunks and roots than on their acorns.
比起橡果，它們給予葉子、樹干以及根莖的能量會(huì)更多。
practices-practice
n.練習(xí)；實(shí)行 v.實(shí)踐；練習(xí)
Besides overhunting, at least three other kinds of effects have been suggested: direct competition,
除了過渡捕獵，至少還有三種影響因素：直接競(jìng)爭(zhēng)，
imbalances between competing species of game animals, and early agricultural practices.
物種間不平衡，以及早期農(nóng)耕。
philadelphia
n.費(fèi)城
hydrogen
n.氫
In the long run, electricity from large wind farms in remote areas might be used to make hydrogen gas from water during periods when there is less than peak demand for electricity.
未來(lái)，偏遠(yuǎn)地區(qū)的大型風(fēng)力發(fā)電廠發(fā)電量高于用電高峰需求量時(shí)，多出的電量可能會(huì)為從水中制造氫氣提供支持。氫氣可以存儲(chǔ)起來(lái)，在需要額外或后備電源時(shí)用來(lái)發(fā)電。
dramatic
adj.劇烈的；戲劇性的
drama
n.戲劇
Several other mass extinctions in the geological record have been tentatively identified with large impacts, but none is so dramatic as the Cretaceous event.
根據(jù)地質(zhì)學(xué)記載，一些其他大批生物的滅絕也被試驗(yàn)性地認(rèn)為與類似的撞擊有關(guān)，但都沒有白堊紀(jì)的那次觸目驚心。
display
n.顯示 v.陳列; 顯示
The Fore also displayed familiar facial expressions when asked how they would respond if they were the characters in stories that called for basic emotional responses.
當(dāng)被問到如果他們是故事中那些需要基本情感響應(yīng)的角色他們會(huì)如何反應(yīng)時(shí)，富勒人也會(huì)呈現(xiàn)出一樣的表情。
climax
n.高潮, 極點(diǎn)
Ecologists are especially interested to know what factors contribute to the resilience of communities
生態(tài)學(xué)家們更想弄清楚到底哪些因素有助于促成群落的恢復(fù)，
because climax communities all over the world are being severely damaged or destroyed by human activities.
因?yàn)槭澜绺鞯氐捻敇O群落都因?yàn)槿祟惢顒?dòng)而遭受到嚴(yán)重的損壞或毀壞。
characters-character
n.個(gè)性；特點(diǎn)
It should be noted, however, that the pure opportunist or pure competitor is rare in nature,
然而，應(yīng)當(dāng)指出，純粹的機(jī)會(huì)主義者或純粹的競(jìng)爭(zhēng)對(duì)手，在本質(zhì)上是罕見的，
as most species fall between the extremes of a continuum, exhibiting a blend of some opportunistic and some competitive characteristics.
因?yàn)榇蠖鄶?shù)種類屬于一個(gè)統(tǒng)一體的兩個(gè)極端之間，表現(xiàn)出了一些投機(jī)取巧的交融和一些有競(jìng)爭(zhēng)力的特色
bottom
n.底; 下端adj.最下的
If a pot has no bottom or has large openings in its sides, it could hardly be considered a container in any traditional sense.
如果一個(gè)罐子沒有底，或壁上有大洞，在傳統(tǒng)意義上它就不能被稱為容器。
biological
adj.生物學(xué)的
biologist
n.生物學(xué)家
microbiologist
n.微生物學(xué)家
An offshoot of the biological approach called sociobiology suggests that aggression is natural and even desirable for people.
生物學(xué)方法的一個(gè)分支被稱為社會(huì)生物學(xué)，社會(huì)生物學(xué)認(rèn)為，人類天生具有攻擊性，并且攻擊性是人類所希望的。
aquifer
n.含水土層, 地下蓄水層
This aquifer was named the Ogallala aquifer after the Ogallala Sioux Indians, who once inhabited the region.
這個(gè)蓄水層因曾經(jīng)在這里定居過的奧加拉拉蘇族印第安人而得名，被稱作奧加拉拉蓄水層。
tone
n.音調(diào), 語(yǔ)調(diào)
A person conveys thoughts and ideas through choice of words, by a tone of voice that is pleasant or unpleasant, gentle or harsh,
人們通過選詞用語(yǔ)、通過表達(dá)愉快或生氣、溫和或尖刻的語(yǔ)調(diào)、
by the rhythm that is inherent within the language itself, and by speech rhythms that are flowing and regular or uneven and hesitant, and finally, by the pitch and melody of the utterance.
通過語(yǔ)言本身富含的節(jié)奏、通過說(shuō)話時(shí)恒定或多變的語(yǔ)速以及音調(diào)的高低起伏來(lái)表達(dá)各種思想觀點(diǎn)。
solar
adj.太陽(yáng)的；太陽(yáng)系的；日光的
Among the most ancient bodies in the solar system are the carbonaceous chondrites that also contain carbon compounds that might have been the precursors of life on Earth.
在太陽(yáng)系中，最古老的隕石要數(shù)碳質(zhì)球粒隕石，它富含碳化合物，這或許也是地球存在生命體的前提。
