She took advantage of the children's absence to tidy their rooms.
她趁孩子们不在时收拾了他们的房间。
The competition has been thrown wide open by the absence of the world champion.
世界冠军的缺席使这场比赛变得胜负难定。
Why? Because there's more to life than just pleasure and the absence of pain, so it seems to me.
为什么？因为在我看来，生活不仅仅是快乐和没有痛苦。
Bats have an engineering problem: how to find their way and find their prey in the absence of light.
蝙蝠们遇到了一个技术上的难题：如何在没有光线的条件下认路和捕食。
We are probably all familiar with background music in films, which has become so ubiquitous as to be noticeable in its absence.
我们可能都熟悉电影中的背景音乐，它已经变得如此普遍，以至于如果没有背景音乐便会显得很突兀。
Barrett wanted to find out if the absence of physical currency does indeed cause a person to spend more, so she decided to conduct an experiment a few months ago.
巴雷特想知道没有了实体货币是否真的会让一个人花更多的钱，所以她几个月前决定做一个实验。
Researchers at Duke University scrutinized more than 160 published studies and found an absence of strong evidence that any of these approaches can make a big difference.
杜克大学的研究人员详细核查了160多项已发表的研究，发现并没有强有力的证据表明这些方法中的任意之一能产生重大作用。
Those who recognize problems as a human condition and don't measure happiness by an absence of problems are the most intelligent kind of humans we know; also, the most rare.
那些将问题看作人为状况、并且不认为幸福就是没有任何难题的人，是我们所知道的最聪明的人；也是最少见的人。
The ostensible reason for his absence was illness.
他假托生病缺勤。
There is more to good health than the mere absence of disease.
健康不仅仅指不生病，还包括更多。
Everyone understood how hard it was to get back into the swing of things after such a long absence.
每个人都明白离开这么长一段时间后要重新全力投入有多难。
Their streamlined bodies, the absence of hind legs, and the presence of a fluke and blowhole cannot disguise their affinities with land dwelling mammals.
它们的身体呈流线型，后肢完全消失，身体上长出了尾片和喷水孔，所有这些特征都无法掩饰它们与陆生哺乳动物之间的亲缘关系。
The story is told with a complete absence of contrivance.
这故事讲得毫不矫揉造作。
The presence or absence of clouds can have an important impact on temperature.
云的有无对气温会产生重要影响。
"In the absence of this species, ecosystems stop working well and may even collapse," Di Martino says.
“如果没有这一物种，生态系统就无法正常运转，甚至可能崩溃。”迪·马蒂诺说。
I was back teaching after an absence of 15 years, dealing with the various kinds of "forbidden fruit" that come out of book bags.
在离开15年后，我回到了教学岗位，处理着从学生书包里冒出来的各种各样的“禁果”。
Why is love intensified by absence?
为什么离别使得爱变得更加强烈？
Nature flourishes in the absence of human life.
大自然在无人的荒原里欣欣向荣。
Harvey: I think your absence might be considered a slight.
哈维：我想你的缺席可能会被视为是对客人的怠慢。
Mental health is more than the absence of mental disorders.
精神卫生不仅仅是没有精神疾患。
The absence of content does not mean the absence of interest.
内容的缺失并不意味着关注的缺失。
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