評(píng)論
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specialized-specialize
v.專攻；專門從事
specialization
n.特長(zhǎng)；專門化
specially
adv.特別地
Public performance is a manner of communication that is highly specialized with its own techniques for obtaining effects by voice and or gesture.
公開的行為表現(xiàn)是一種交流方式，我們通常會(huì)通過聲音或手勢(shì)來獲取注意力。
readily
adv.容易地；樂意地
Exhibitors, however, wanted to maximize their profits, which they could do more readily by projecting a handful of films to hundreds of customers at a time
然而，電影放映者們期望將自己的收益最大化，他們希望能更簡(jiǎn)易地將少量電影同時(shí)放映給幾百個(gè)顧客
(rather than one at a time) and by charging 25 to 50 cents admission.
（而不是每次為一個(gè)顧客播放一次電影），每次收費(fèi)25到50 美分。
potential
adj.有潛力的, 潛在的
potentially
adv.潛在地
One potential problem is that opening the mouth to breathe detracts from the streamlining of these fishes and tends to slow them down.
一個(gè)潛在的問題是打開嘴呼吸的流線型的影響，這些魚趨于緩慢下來。
migration
n.遷移
migrate
v.遷移
migratory
adj.遷移的
immigration
n.外來的移民
Later Heyerdahl suggested that the Pacific was peopled by three migrations:
后來Heyerdahl表明太平洋人來自三個(gè)移民群體：
by Native Americans from the Pacific Northwest of North America drifting to Hawaii, by Peruvians drifting to Easter Island, and by Melanesians.
從北美洲西北部太平洋地區(qū)漂流到夏威夷的美國(guó)本土居民，從秘魯去往復(fù)活節(jié)島的漂流者，還有美拉尼西亞人。
masks-mask
n.遮蔽物；偽裝 v.掩飾
headmask
n.英國(guó)中小學(xué)校長(zhǎng)
Performers may wear costumes and masks to represent the mythical characters or supernatural forces in the rituals or in accompanying celebrations.
在這種儀式或伴隨的慶典中，表演者們可能會(huì)穿上戲裝戴上面具來扮演神秘的角色或超自然力量。
habitats-habitat
n.棲息地，居留地
Human landscapes of lawns, fields, or flowerbeds provide settings with bare soil and a lack of competitors that are perfect habitats for colonization by opportunists.
人工草坪、田地或花圃提供的光禿禿的土地，以及沒有競(jìng)爭(zhēng)者的環(huán)境是“機(jī)會(huì)主義者”完美的棲息地。
fundamental
n.基本原則adj.基本的；重要的
Such a perspective fundamentally changes our view of biological evolution.
這種觀點(diǎn)從根本上改變了我們對(duì)生物進(jìn)化的看法。
cycle
n.周期；循環(huán) v.循環(huán)
If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
如果人口按時(shí)間進(jìn)行跟蹤，那么就會(huì)十分不穩(wěn)定，人口正在無規(guī)則地升高和降低。
cattle
n.牛; 牲口
This region has a semiarid climate, and for 50 years after its settlement, it supported a low-intensity agricultural economy of cattle ranching and wheat farming.
這里有著半干旱的氣候，在人們定居50年后，它支撐了一個(gè)以畜牧業(yè)和小麥種植為主的低密度農(nóng)業(yè)經(jīng)濟(jì)。
california
n.加州
Most were in Denmark (which got 3 percent of its electricity from wind turbines) and California
多數(shù)在丹麥（風(fēng)能發(fā)電占3%），以及加州
(where 17,000 machines produced 1 percent of the state's electricity, enough to meet the residential needs of a city as large as San Francisco).
（1.7萬臺(tái)機(jī)器為加州產(chǎn)能1%，足以滿足像舊金山等大城市的居民需求）。
brief
adj.簡(jiǎn)短的n.摘要；簡(jiǎn)報(bào)v.摘要
The process perceived by these anthropologists may be summarized briefly.
這些人類學(xué)家們推論過程可簡(jiǎn)要概括。
avoid
v.躲開, 避開
This enables them to avoid the worst rigors of high winds and permits them to make use of the higher temperatures immediately adjacent to the ground surface.
這種特點(diǎn)使它們得以免受惡劣強(qiáng)風(fēng)的侵襲，并有助于它們利用地面附近的較高溫度。
accurate
adj.精確的；正確的
Ekman argued that the ability to accurately recognize the emotional content of facial expressions was valuable for human beings.
艾克曼認(rèn)為，能夠準(zhǔn)確認(rèn)知面部表情對(duì)人類而言非常重要。
vitamins-vitamin
n.維生素
Almost daily the public is besieged by claims for "no-aging" diets, new vitamins, and other wonder foods.
大眾幾乎天天渲染“不老”飲食，新維他命以及其它神奇食物。
timberline
n.樹帶界線
timber
n.木材
There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline.
目前還沒有一個(gè)普遍認(rèn)同的解釋來說明為什么會(huì)在樹帶界線上出現(xiàn)樹木停止生長(zhǎng)這種戲劇化的現(xiàn)象。
pueblos-pueblo
n.印第安人村莊
Then, to connect the pueblos and to give access to the surrounding tableland,
為了連接印第安人村莊和周邊高原，
the architects laid out a system of public roads with stone staircases for ascending cliff faces.
建筑師建造了一種道路系統(tǒng)，石子樓梯可供人們攀登上崖面。
pollutants-pollutant
n.污染物質(zhì)
polluted-pollute
v.污染, 弄臟
With a moderate to fairly high net energy yield, these systems emit no heat-trapping carbon dioxide or other air pollutants and need no water for cooling;
對(duì)相當(dāng)高純的能量產(chǎn)額具有一種穩(wěn)定性的情況下，
manufacturing them produces little water pollution.
這些系統(tǒng)不散發(fā)吸熱的二氧化碳或者其他空氣污染物，無需冷卻水。
