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第27部分(第3页)

3。 Debris thrown into the atmosphere by an asteroid collision would presumably contain large amounts of iridium; and at the same time atmospheric currents would carry this material all over the globe。 大气层中行星撞击形成的碎片可能含有大量的铱元素,与此同时,大气的气流会把这些铱带到地球的每个地方。

同义 ruin; remains(n。 废墟,残骸);fragment(n。 碎屑,散落的碎片)

deceive[disi:v]v。 欺骗

例句 We may be deceived by the figure since over 80 percent of the worlds freshwater is locked up as ice in glaciers。 我们可能被这个数字欺骗了,因为世界上80%的淡水都是以冰的形式冻结在冰川中的。

deplete[dipli:t]v。 使枯竭,耗尽;倒空;消耗

例句 1。 Except for being depleted in volatile elements; chondritic meteorites are probably very similar in the matter which makes up planets。 除了缺乏挥发性元素外,球状陨石的组成物质与行星十分相似。

2。 The meteorite is depleted in the most volatile elements; like hydrogen and carbon。 这颗陨星耗尽了大部分的挥发性元素,比如氢气和碳。

3。 Some plants can bear relatively low levels of certain minerals; but they are of little use for recycling nutrients back into depleted soils。 某些植物能够忍受某些特定矿物质的较低含量,但这些植物几乎无法将营养供给到贫瘠的土壤中循环再用。

同义 exhaust(v。 使枯竭,耗尽)

depletion[dipli:?n]n。 削减,消耗

例句 1。 The depletion of the ozone layer over the Arctic region has reached an unprecedented level — a loss of 40% from the beginning of the winter to late March in 2011。 从冬天开始到2011年三月下旬,南极地区的臭氧层减少了40%——这已达到一个空前的水平。

2。 In modern agriculture; mineral depletion of coal is a major concern。 在现代农业中,煤炭资源的消耗是最令人担忧的。

3。 The black loams of the prairies were tempting to New England farmers working their rock and to southeastern farmers plagued with soil depletion。 大草原提供了诱人的黑色土壤——这对整日与岩石地打交道的新英格兰农民或为土壤贫瘠所困扰的东南部农民来说极具吸引力。

disperse[disp?:rs]v。 分散,散开;疏散

例句 1。 In some cases; owls get food from the seeds that are dispersed in the wind。 在一些情况下,猫头鹰把飘散在风中的种子当做食物。

2。 A survey shows that it is difficult to get to know people personally when they are milling about and dispersed in large groups。 一项调查显示,当人们兜兜转转,分散在大群体中的时候,想要了解一个人是很困难的。

3。 The fact that pollinators obtain food from the flowering plants makes the plants have its pollen distributed and seeds dispersed much more efficiently than they would be if they were carried by the wind only。 传粉者从开花植物中获取花粉,这比植物仅依靠风的作用来传播花粉或分散种子的效率更高。

domestication[d??mestikei?n]n。 驯养;教化

例句 1。 Many plicated theories attempt to explain the way of early domestication of animals。 很多复杂的理论试图解释早期驯养动物的方法。

2。 The proposed areas of the domestication of African crops lie in a bank in West Africa。 提到的非洲作物驯化的区域位于西非某条河的河畔。

drain[drein]v。(使)流走,流干;渐渐耗尽

例句 1。 Much of the water in a sample of water…saturated sediment will drain from it if the sample is placed in a dry place。 如果将样本放在一个干燥的位置,那么这个渗满水的沉积物样本中大部分的水分都会流失。

2。 It is thought the total volume of water in the saturated sample cannot drain away。 饱和样品的总含水量被认为是不可能耗尽的。

3。 Endogenous rivers often do not reach the sea but drain into inland basins。 内生河流通常不会流入大海,而是会在内陆盆地中逐渐干涸。

同义 flow away(流走)

drainage[dreini?]n。 排水;排水系统,排水装置

例句 Extensive irrigation with poor drainage makes the surface of the soil salty; which reduces water and air absorption。 过度灌溉和排水不畅使土地表层盐化,这导致土壤对水分和空气的吸收有所减少。

electrical[ilektrikl]a。 电的,与电有关的

例句 1。 Lightning is a brilliant flash of light created by an electrical discharge from storm clouds。 闪电是暴风云放电产生的一道明亮的闪光。

2。 Changes in the electrical pattern of the brain show that the stimulus is getting through to the central nervous system and evoking some form of response。 大脑电波模式的改变显示刺激已通过中枢神经系统,并引发了一些形式的反应。

escape[iskeip]n。v。 逃脱;渗出;躲避

例句 1。 The theater can be seen as one tool for people to define and understand their world or escape from unpleasant realities。 戏剧可以看作人们定义和理解他们世界的工具,也是逃避不?

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