4周搞定2000+托福核心词
excavation = ex(出) + cav(洞) + ate(做，使) + ion(表名词) = 出洞→挖掘
exceedingly = ex(出) + ceed(走) + ing(形容词) + ly(表副词) = 走出→超出地
attentive = at(临近) + tent(伸展) + ive(...的) = (心神)延伸过来→留神的
pretentious = pre(向前) + tent(伸展) + ious(…的) = 提前摆出一种姿态→做作的
伸出去的范围→广度,宽度
extent
常考释义
To what extent competition determines the composition of a community and the density of particular species has been the source of considerable controversy.
竞争在多大程度上决定群落的组成和某特定物种的密度一直备受争议。
来源于：阅读OFFICIAL29 P2n. 程度；范围；长度
Things are not yet carried to that extent.
事情还没有发展到那种程度。
The propensity for violence is to some extent heritable.
在某种程度上，暴力倾向是具有遗传性的。
来自《心理学导论》
图片源自网络
Yet even setting aside the unproven hints of ancient oceans, the extent of the outflow channels suggests that a huge total volume of water existed on Mars in the past.
然而就算不考虑尚未证明的古代海洋存在的观点，出流通道的广泛存在就足以证明在火星上曾有大量的水体。
来源于：阅读OFFICIAL8 P3A computer-generated view of the Martian north polar region shows the extent of what may have been an ancient ocean covering much of the northern lowlands.
一张关于火星北部极地地区的电脑图片说明有可能有一个古老的海洋覆盖了大部分北部的低洼处。
来源于：阅读OFFICIAL8 P3These include the chaotic fluctuations of the atmosphere, the slower but equally erratic behavior of the oceans, changes in the land surfaces, and the extent of ice and snow.
这些原因包括变化多端的大气波动，较慢却同样不稳定的海洋活动，地表变化以及冰雪的覆盖度。
来源于：阅读OFFICIAL10 P2To the extent that the coverage of the global climate from these records can provide a measure of its true variability, it should at least indicate how all the natural causes of climate change have combined.
这些指标中记录的全球气候的覆盖范围已经达到了可以提供真实的气候变化标准的程度，它至少能揭示所有引起气候变化的自然原因是怎样息息相关的。
来源于：阅读OFFICIAL10 P2We need therefore to know how much the climate can vary of its own accord in order to interpret with confidence the extent to which recent changes are natural as opposed to being the result of human activities.
因此，我们需要知道气候变化在多大程度上是自然原因造成的，从而可以确切地解释出最近的气候变化是自然原因造成，，或相反人类活动的结果。
来源于：阅读OFFICIAL10 P2Such programs are much needed because in many arid lands there is only a vague idea of the extent of groundwater resources.
这些项目非常有必要，因为在很多干旱地区对于地下水资源的程度概念非常模糊。
来源于：阅读OFFICIAL12 P3But with the passing of time, the original writing might reappear; in fact, it might reappear to the extent that scholars could make out and even decipher the original text.
但是过一段时间，早先的字迹可能会重新显示出来。事实上，甚至到了一种程度，就是学者可以分辨住原始版本的密文。
来源于：听力OFFICIAL15 L5But, suddenly, in the 19th century, it became quite acceptable, even to some extent, almost expected for a middle-class European woman to be able to play the piano, partly because among upper-middle-class women, it was a sign of refinement.
但是，事情到了19世纪就突然发生了很大变化。钢琴变得非常受欢迎，甚至绝大部分中上层阶级出身的妇女都被要求拥有弹奏它的能力。之所以形成这种局面，一部分是因为中上层女性把弹奏钢琴看成是优雅的标志。
来源于：听力OFFICIAL16 L3Remember I said that photography and art photography had largely taken the place of portraiture, to the extent that some critics had declared the genre of portraiture to be dead.
还记得我说摄影及摄影艺术很大程度上代替了肖像画的位置吧, 以至于达到了某些评论家宣布肖像画流派将会销声匿迹声的程度.
来源于：听力OFFICIAL21 L6To what extent competition determines the composition of a community and the density of particular species has been the source of considerable controversy.
竞争在多大程度上决定群落的组成和某特定物种的密度一直备受争议。
来源于：阅读OFFICIAL29 P2Many ever-changing variables affected ancient trade, among them the demand for goods. There were also the logistics of transportation, the extent of the trading network, and the social and political environment.
许多不断变化的变量，比如对商品的需求，影响着古代贸易。还有物流运输、贸易网络的广度，以及社会和政治环境。
来源于：阅读OFFICIAL41 P3Forest fires have recently increased in intensity and extent in some forest types throughout the western United States.
近期，发生在美国西部地区的一些森林中的森林火灾，无论是强度还是范围，都有所增加。
来源于：阅读OFFICIAL39 P3n. 长度，面积
The garden was about two acres in extent.
花园大约有两英亩大。
to some extent
在某种程度上
some extent
有几分，在某种程度上；在一定程度上
the extent of
在…的范围内；到…的程度
to the extent
到…的程度
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