We could describe such people as changeable, uncertain or -- here's a good word -- fickle.

我们可以形容这些人易变（changeable）、多变（uncertain），这里有一个很适合的词，反复无常（fickle）。

Sexuality isn't fixed, as it is fluid.

向并非固定 而是流动易变。

Remember, these numbers are volatile and can sometimes change by the second.

请记住，这些数字是易变的， 有时会以秒为单位发生变化。

Their shares are more liquid than those of many smaller companies.

【liquid】他们的股票比许多较小型的公司的股票更易变。

They delude us more than they teach us, and bring us but uncertain and fugitive images.

他们欺骗我们多于他们教导我们， 给我们带来的只是确定和易变的形象。

This outward mutability indicated, and did not more than fairly express, the various properties of her inner life.

这种外在的易变表明，但只是公平地表达了她内心生活的各种特。

Thus just as earlier theories have explained the mobility of the continents, so hot spots may explain their mutability (inconstancy).

因此，正如早期的理论解释了大陆的流动，热点也可以解释它们的易变（定）。

THOSE unconvinced-and those seeking to unconvince others-of the reality of man-made global warming often point to the changeable behaviour of the sun as an alternative hypothesis.

相信全球变暖是人为因素造成的和那些企图让别人相信的人常常会将太阳的易变表现作为假设进行选择。

It could be because of greater natural variability in the climate, because clouds dampen warming or because of some other little-understood mechanism in the almost infinitely complex climate system.

这可能是因为自然气候有很大的易变，因为云能减弱温升，或因为在无限复杂的气候系统中有一些为人知的调节机制。

For these reasons perfect stability of prices is impossible in an economy subject to change-unless, indeed, there is some peculiar mechanism which ensures temporary fluctuations of just the right degree in the propensity to consume.

由于这些原因，在一个易变的经济体中，价格的完美定是可能的——事实上，除非有某种特殊的机制来确保消费倾向的暂时波动恰到好处。