她的情绪总是变幻不定—时而欢喜，时而忧伤。
他的表情在不露声色与茫然之间变幻不定。
这和北极光的变幻不定极其相似。
It was like nothing so much as the phantasmagoric play of the northern lights.
这场大雨也许能使变幻不定的天气稳定下来。
她的情绪总是变幻不定，时而欢喜，时而忧伤。
光变幻不定。
除了监管机构的变幻不定以外，盗版也是一个重要问题。
In addition to the whims of regulators, piracy is also a major problem.
一切看上去都是客观的(真实的)、但是变幻不定的。
Everything seems objective (real) but is changeable and fluid.
这些光波颜色驳杂不纯，变幻不定，久看使人产生旋转头晕的感觉。
The light color of heterogeneous impurities, volatile, long look will make people feel dizzy spin.
那地方的美是海天茫茫的美，是湖水变幻不定的色彩和椰子树的摇曳多姿。
Its beauty is the beauty of the sea and sky, and the varied colour of the lagoon, and the grace of the coconut trees.
爱情乃时间唯一变幻不定本质永远空洞的事物，所以它怎么可能有真名任人捕捉呢？
Love is the only time shifting empty the essence of things, so how could it have a name be capture?
韩国三星经济研究中心副总裁权纯盱说，只要经济情势继续隐晦不明，股票市场仍将变幻不定。
Samsung Economic Research Institute vice president Kwon Soon-woo says stock markets will continue to be volatile, as long as economic uncertainty looms.
葡萄酒时尚和其它时尚一样变幻不定，但澳大利亚葡萄酒从被尊敬到被唾骂的速度却相当不同寻常。
Fashions in wine, just as in everything else, come and go but the speed with which Australia has moved from being revered to being reviled is quite remarkable.
值得高兴的是：我们听到的所有新的研究，尽管似乎是变幻不定的，但是有些结果的确是清楚明确，令人放心的。
The good news: All that new research we keep hearing about, baffling though it may be, is yielding some clear—and reassuring—answers.
国库秘书工作有时是需要成为一名马语者，学会温柔的说话间接的传到他们的耳朵里，来驯服变幻不定的金融市场。
The job of the Treasury Secretary is chiefly that of a horse whisperer, to tame skittish financial markets by talking sweetly, if sometimes obliquely, into their ears.
詹姆斯·乔伊斯(2)写的《尤利西斯》和《芬尼根守灵记》，如同互相撞击，前后参映的思想网络，每次阅读都会有变幻不定的感觉。
James Joyce wrote Ulysses and Finnegan's Wake as a network of ideas colliding, cross-referencing, and shifting upon each reading.
不要忘了我们仍然在这个广袤、变幻莫测，而且对于我们而言无比神秘的宇宙中飘摇不定着。
We are still adrift in a large, shifting, mysterious (to us) universe.
他像是一团雾，漂移不定，变幻莫测。
而当我试图抓住那飘忽不定的形象时，它们又不断变幻着向画面深处退去。
However, the floating images would withdraw into the depth of the painting when I make an attempt to reach them.
最近天气变幻无常，阴晴不定。
最近天气变幻无常，阴晴不定。
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