Stability can be defined as simply lack of change.

稳定性可以被定义为只是缺乏变化。

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Mood may be defined as a temporary and mild positive or negative feeling that is generalized and not tied to any particular circumstance.

情绪可以被定义为一种短暂而温和的积极或消极的感觉，它是泛化的，不受任何特定环境的约束。

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Alternatively, stability can be defined as the speed with which an ecosystem returns to a particular form following a major disturbance, such as a fire.

或者，稳定性可以被定义为生态系统在发生重大扰动，如一场火灾后，恢复到特定形式的速度。

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The Justice Department says domestic violence can be defined as a pattern of abusive behavior used by one partner in any relationship to control another partner.

VOA: special.2009.02.28

One might have to do with where it's from and how it's made so that might tell us a little bit about whether something should be defined as a food.

一个是关于食品源自何处,怎么生产的,这会给我们一些参考,去判断何为食品

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The triple point of water is going to be defined as 273.16 degrees Kelvin.

现在的参考点是0K：,绝对零度。

麻省理工公开课 - 热力学与动力学课程节选

But then Facebook needs to make sure that Facebook Home can be defined as a success.

FORBES: Facebook Ready To Spend Heavily To Promote A Successful Facebook Home Launch

Yes, terribly naughty and it will now be defined as a specific crime.

FORBES: The Libor Reform That Doesn't Reform Libor Enough

More than 70% of China's exports can be defined as labor-intensive.

FORBES: Magazine Article