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multiple
n.倍数adj.复合的
It is lightweight impermeable to liquids, readily cleaned and reused , durable yet fragile,
它又薄又轻且不透水，易清洗可反复使用，耐用但是易碎，
and often very beautiful Glass can be decorated in multiple ways and its optical properties are exceptional.
通常精美的镜片是经过双重的工艺加工的，它的光学特质是无以伦比的。
mantle
n.遮盖物, 斗篷
The rocks of the crust are composed mostly of minerals with light elements,
地壳岩石由铝和钠等大量矿物质和轻元素组成，
like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium.
覆盖面由铁和镁等重元素组成。
inevitable
adj.不可避免的
The reaction of farmers to the inevitable depletion of the Ogallala varies.
农场主们对无法避免的奥加拉拉蓄水层枯竭的反应各不相同。
historians-historian
n.历史学家
These writers, like most of their male counterparts, were amateur historians.
如多数男作家一样，女作家也同样是业余历史爱好者。
fresh
adj.新鲜的
freshwater
adj.淡水的
refreshing-refresh
v.使清新
This job gave Smith an opportunity to study the fresh rock outcrops created by the newly dug canal.
这份工作为史密斯提供了机会，使他能够接触和学习那些因为运河开掘而露出地面的新鲜岩层。
favor
n.赞成
Having little understanding of natural causes, it attributes both desirable and undesirable occurrences to supernatural or magical forces,
因为较少的了解自然的成因，所以他把期望的或者不期望发生的事情都归因于超自然或者神奇的力量，
and it searches for means to win the favor of these forces.
他们需要寻找一种工具去赢得这些力量的支持。
explore
v .探测；探险
explorers-explorer
n.探险家
exploration
n.勘查
exploratory
adj.探险的
Existing technology cannot fully explore the properties of pheromones.
现有技术无法全面探索信息素。
dwellers-dweller
n.居民
dwells-dwell
v.居住
But city dwellers also developed other pleasures which only compact communities made possible.
城市居民也发展了只有小社区能发展起来的业余爱好。
drought
n.干旱
For good measure, during the spring and summer, drought, heat, hail, grasshoppers, and other frustrations might await the wary grower.
在春季和夏季，要精确量度干旱、热量、冰雹、蝗虫和其他损失可能是一件疲劳的事情。
divided-divide
v.分, 划分
These can be divided into preformed or passive defense mechanisms and inducible or active systems.
这些可以分为预先防御机制和被动防御机制，以及可诱导或活跃机制。
decay
v.腐朽, 腐烂n.腐朽, 腐烂
As soon as the oxygen is gone, decay stops and the remaining organic matter is preserved.
当氧气消耗殆尽分解便停止，留下剩余的有机物。
copper
n.铜
coppersmiths-coppersmith
n.铜匠
Virtually all copper worked by smiths was imported as sheets or obtained by recycling old copper goods.
铁匠的所有铜品几乎全部出口成薄板，或是被破旧铜品回收。
complicated
adj.复杂的
But this type of engine was expensive and complicated, requiring many precision-fitted moving parts.
这种引擎既昂贵又复杂，需要精确合适的可替换标准件。
ceremonies-ceremony
n.仪式
ceremonial
adj.正式的
Unfortunately, this explanation fails to explain the hidden locations, unless the migrations were celebrated with secret ceremonies.
不幸的是，这一解释并未对隐蔽处进行解释，除非移民举行了秘密庆祝活动。
cast
n.演员阵容, 铸件v.投；图谋
It also casts off attached structures such as tentacles.
触须等附件也被抛弃了。
brick
n.砖
When he used an icebox of his own design to transport his butter to market,
当他使用自己设计的冰箱来运送黄油去市场的时候，
he found that customers would pass up the rapidly melting stuff in the rubs of his competitors
他发现顾客们都愿意拒绝他的竞争者手中那些在桶中快速融化的黄油，
to pay a premium price for his butter, still fresh and hard in neat, one-pound bricks.
而以更高的价格购买他的黄油，它们既新鲜又坚硬，整整齐齐排放着，一磅一块。
beneath
adv.在...之下
At the same time at margins of converging plates,
与此同时在汇聚版块边缘，
the oceanic crust is being reabsorbed by being subducted into the mantle and remelted beneath the ocean trenches.
海洋地壳通过与地幔结合而被吸收，并在海沟下被再次融化。
accompanying-accompany
v.陪同；伴随
With appropriate banking of the extra food, the Mandans protected themselves against the disaster of crop failure and accompanying hunger.
由于补给食物充足，曼丹人可抵御歉收以及随之而来的饥荒。
animation
n.卡通制作, 活泼
The specialized requirements of particular urban situations have further expanded the use of art in public places:
由于城市生活的特殊需要，公共艺术的范围也在不断扩大，
in Memphis, sculptor Richard Hunt has created a monument to Martin Luther King, Jr., who was slain there;
在孟菲斯，雕塑家理查德·亨特创作了马丁路德·金雕塑，
in New York, Dan Flavin and Bill Brand have contributed neon and animation works to the enhancement of mass transit facilities.
在纽约，丹·弗莱文和比尔·布兰德用霓虹灯和动画作品展现了公共交通设施的扩展。
