This is a metaphor used to illustrate this observation.

这是一个用来说明这一观察的隐喻。

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In 2004, Rogers used this observation to test the advantages of brain bias in chicks faced with the challenge of multitasking.

在2004年，Rogers 利用这一观察结果，测试了小鸡在面临多重任务挑战时的大脑倾向优势。

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To do this,he says, weather observation networks must be strengthened.

VOA: standard.2009.08.30

So, this observation is equivalent to saying that there must be something that is path independent.

这个表述相当于说,一定存在某个物理量是与路径无关的。

麻省理工公开课 - 热力学与动力学课程节选

Nothing follows from this observation about the actual meaning of the text.

没有关注,文本的实际含义。

耶鲁公开课 - 文学理论导论课程节选

He thought to generalize this observation from local and state governments to state and national governments.

FORBES: Why James Madison Was Wrong About A Large Republic

What made this observation even more interesting for the scientists is that fruit flies are vegetarian.

BBC: Cannibal fruit flies: Lab maggots hunt one another

This observation goes to the heart of the argument about what "fair" should mean.

BBC: Blunt speaking on town hall cuts