在化学变化中，一种物质变成另一种完全不同的物质。
During a chemical change, one kind of matter changes into another completely different kind of matter.
有证据表明，这一时期发生了重大的生态和地质变化。
There is evidence of major ecological and geological changes during this period.
当卵子受精时，这些物质变得活跃起来，并可能控制与它们相互作用的基因的行为。
When the egg is fertilized, the substances become active and, presumably, govern the behavior of the genes they interact with.
这些雕刻的某些特征让人得出它们年代久远的结论——这些设计完成之后显然有地质变化发生。
Certain features of these engravings lead to the conclusion that they are of great age—geological changes had clearly happened after the designs had been made.
我认为这是一种质变。
物质变成社会里的唯一成功指针。
Material goods are considered the only signifiers of success in a society.
我不认为会有很大实质变化。
随着物质变干燥，火情出现，火势不断蔓延。
大脑化学物质变化。
在他看来，这个转变不仅仅是量变，更是质变。
会使水质变得更差。
另一大风险来自交易所交易基金本身的性质变化。
现下正在发生的已经不是累加增长了，量变正在引起质变。
Yet what is happening now goes way beyond incremental growth. The quantitative change has begun to make a qualitative difference.
它能把我们吃下的蛋白质变成更小的单位，便于吸收。
This helps to break down the protein we eat into smaller units that can be absorbed.
还有就是冷却水太脏或水质变坏，需要更换干净的冷却水。
There is water too dirty or water quality change bad, need to replace clean water.
某些情况下，由于牙釉质变薄，牙齿需要做牙套保护或者拔除。
In some cases, teeth have to be capped or replaced because of thinning enamel.
关于脑细胞是如何被质变的神经疾病杀死的奥秘跟这没有什么不同。
The mystery of how brain cells are killed off by degenerative neurological diseases is no different.
规模量的变化不引起根本质变，等级量的变化则能引起根本质变。
While the change of its extent does not often cause qualitative change, the change of degree does cause qualitative change.
所有物质变得惰性，而且在这样的温度下它们也无法发生化学反应。
All matter becomes inert and incapable of reaction at that temperature.
我们希望老忠实为响应正在进行的地质变化过程与矿物沉积和地震有关。
We expect Old Faithful to change in response to the ongoing geologic processes associated with mineral deposition and earthquakes.
量变引起质变，所有这些合理的问题堆积起来就会达到失去工作的关键量。
All of these reasonable issues can add up to a critical amount of lost work.
人类的很多持续的行为都可以用到量变与质变的原理，他的三个推论也很有用。
There are many human behaviours that fit into the principle of quantity change and quality change. His three inductions are practical as well.
一位报导科学新闻的记者说，由于奇怪的地质变化，英国各地区的重力减小了。
A scientific correspondent reported that strange geological changes had resulted in weaker gravity in different parts of Britain.
所有的破坏性因素都在进行量的积累，并以超出科学家预料的速度突然发生质变。
It's all of those destructive factors working cumulatively and occurring much more rapidly than scientists had expected.
这是一个质变，就好比是把星星变成一条线，当公司加速成长时，这条线就会延伸至无限远。
It's a qualitative change, like the stars turning into lines and disappearing when the Enterprise accelerates to warp speed.
尽管这些年技术已经进入了工作领域，到目前为止这个层面还没发生多少实质变化。
Despite all the technology that has entered the workplace in recent years, so far this layer has not really changed.
尽管这些年技术已经进入了工作领域，到目前为止这个层面还没发生多少实质变化。
Despite all the technology that has entered the workplace in recent years, so far this layer has not really changed.
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