上学期留学生的考试成绩一直无规律地波动，在教学改革后成绩有明显上升。
Last semester the scores of the foreign students fluctuated irregularly, but showed an obvious increase after the reform in teaching.
“看过了什么？”他顺着她手指的方向，看到了屏幕上的一串串波形，上下波动，毫无规律。
"Have a look at what?" he looked at where her finger traced a series of lines on the screen, all drifting up and down chaotically.
越来越多的研究者发现，金融市场价格看似无规律的波动背后，似乎有一些潜在的信息或规律。
Researchers in an increasing number find that certain potential information or pattern exist behind the plausibly ruleless price fluctuation in the financial markets.
波速比随温度升高波动大，无规律可循，随频率升高明显下降。这些可作为地震或其他疲劳损伤的前兆。
There exists a large variation of velocity with temperature and frequency, which can be applied as the omens of earthquake or fatigue damage.
波速比随温度升高波动大，无规律可循，随频率升高明显下降。这些可作为地震或其他疲劳损伤的前兆。
There exists a large variation of velocity with temperature and frequency, which can be applied as the omens of earthquake or fatigue damage.
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