环境条件有变化吗？

Was there a change in environmental conditions?

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因为所涉及的条件不断变化，所以农业很难量化。

Agriculture proves very difficult to quantify because of the constantly changing conditions involved.

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混沌理论是由科学家提出的，试图解释行星的运动和环境条件的变化。

Chaos theory was developed by scientists, trying to explain the movement of the planets and the changes in environmental conditions.

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This is the condition for really the lion's share of chemistry, biology, and other kinds of changes we'll be concerned with.

这就是绝大部分,生物变化，化学变化，和其他变化所关心的条件。

麻省理工公开课 - 热力学与动力学课程节选

Whereas under these conditions, these quantities, if you look at free energy change, for example at constant temperature and pressure, H you can still calculate H.

但是，在这些条件下，这些物理量，如果我们考察自由能的变化,例如在恒定的温度和压强下，我们仍然可以计算。

麻省理工公开课 - 热力学与动力学课程节选

This normal weight animal like this has its whole equilibrium thrown off, its homeostasis thrown off when its dietary conditions change.

在饮食条件发生变化时,这些正常体重动物的生理平衡被打破,于是摈弃了原来的平衡饮食

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