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pores-pore
n.细孔
porous
adj.多孔的
porosity
n.多孔性
Consolidated (or cemented) sediments, too, contain millions of minute water-holding pores.
而坚固沉积物同样也拥有以数万计的微孔来容纳水分。
peak
n.山顶；最高点
Cave art seems to have reached a peak toward the end of the upper Paleolithic period, when the herds of game were decreasing.
在后期旧石器时代猎群数量减少时，岩洞画艺术似乎达到了顶峰。
occasionally
adv.偶尔
occasional
adj.偶然的
occasions-occasion
n.场合, 机会
Wind turbines occasionally cause migratory birds to change their flight patterns and therefore may interfere with the areas where birds of prey prefer to hunt.
风力涡轮机偶会会让候鸟改变飞行模式，猛禽的猎食区域也会受到干扰。
threatened-threaten
v.恐吓；威胁
threat
n.恐吓, 威胁
It has been estimated that an additional one-fourth of the Earth's land surface is threatened by this process.
据估计，四分之一地球表面遭此过程威胁。
issues-issue
n.文章；问题v.发行
They offer sympathy when someone experiences difficulties or is subjected to discipline,
当有人遇到困难或遭受惩罚时，人们会心生怜悯，
are quick to lighten a serious moment with humor,and try to resolve issues that threaten to divide the group.
会迅速通过幽默的话语缓解紧张气氛，试图挽救即将要分崩离析的组织。
hind
adj.后面的
The large hind legs were used for propulsion in water.
在水中，强大的后肢力量起到推进作用。
gills-gill
n.鳃
Because they are always swimming, tunas simply have to open their mouths and water is forced in and over their gills.
因为金枪鱼的游动从不停止，它们必须张着嘴使水流经它们的腮。
generations-generation
n.一代；产生
Enormous changes in materials and techniques of construction within the last few generations
近几代建筑材料和科技的巨大变化使得包围空间
have made it possible to enclose space with much greater ease and speed and with a minimum of material.
更加简单、快速，并且用更少的材料。
frontier
n.边境
The ocean bottom-a region nearly 2.5 times greater than the total land area of the Earth-is a vast frontier that even today is largely unexplored and uncharted.
几乎比地球陆地总面积大2.5倍的大洋底部，是一块至今尚未被探索和涉足的广大区域。
fort
n.堡垒, 要塞
Found a disturbing change in the animal life around the fort during the period between his first visit in 1825 and his final contact with the fort in 1832.
苏格兰植物学探险家大卫?道格拉斯发现了他在1825年第一次的探访和1832年的最后接触之间出现在温哥华堡附近令人不安的变化。
federal
adj.联邦的
Sectional jealousies and constitutional scruples stood in the way of action by the federal government and necessary expenditures were too great for private enterprise.
小群体的嫉妒和对宪法的顾虑阻碍了联邦政府施政，必要支出对于私营业主来说太过高昂。
emit
v.散发；发出
emission
n.散发；发射
They sought ways by which one atom or molecule could stimulate many others to emit light, amplifying it to much higher powers.
通过原子或分子刺激发光，增加能量。
data
n.数据（复数）
Linguistic, archaeological, and biological data connected the islands to Egypt.
语言学，考古学以及生物学数据将这片岛屿与埃及联系起来。
cultivated-cultivate
v.培养; 耕作
cultivation
n.耕作；（细菌等）培养
The culture of that time, based on archaeology and linguistic reconstruction,
通过考古学和语言学的重建发现，那个时候的文明拥有广泛的植物储存，
is assumed to have had a broad inventory of cultivated plants including taro, yarns, banana, sugarcane, breadfruit, coconut, sago, and rice.
包括芋头、纱、香蕉、甘蔗、面包果、椰子、西米和稻米。
conventional
adj.传统的, 约定的
conventions-convention
n.大会；协定
Conventional computer models of the atmosphere have limited value in predicting short - lived local storms like the Edmonton tornado,
传统的大气计算机模型在预测短周期风暴，例如埃德蒙顿龙卷风时用处不大，
because the available weather data are generally not detailed enough to allow computers to discern the subtle atmospheric changes that precede these storms.
因为现有气候数据通常并不详尽，电脑无法辨别出风暴来临之前的细微大气变化。
attempts-attempt
n.尝试；攻击v.尝试
Although governmental attempts to eradicate fairs and auctions were less than successful,
尽管政府清除定期集市和拍卖的努力不成功，
the ordinary course of economic development was on the merchants' side, as increasing business specialization became the order of the day.
但当不断出现的商业分工成为当时的通例时，常规的经济发展路线还是站在了商人一边。
assumed-assume
v.以为; 认为
assumption
n.设想, 假定
The first Europeans to reach the area assumed that the islands' original inhabitants must have drifted to Oceania, perhaps from Egypt or the Americas.
据率先到达该地的欧洲人推测，该岛屿的原始居民一定是从埃及或美洲前往大洋洲。
