This new study USES a quasi-experimental design to derive data from a naturally occurring situation in which children were exposed to two different disciplinary environments.
这项新研究采用准实验设计，即从一个自然出现的情形获取数据，这种情形就是孩子们处在两种不同的纪律环境下。
A new study finds that there are two factors at work: the knowledge of where the sound is coming from and the unfortunate design of our ear canals.
一项新的研究发现，有两个因素在发挥作用：一个是听众对于声音来源的认识，另一个是我们耳道那种令人遗憾的形状。
Study and design to the parametric loudspeaker system include the contents of two respects: software and hardware.
对参量扬声器系统的研究和设计包含了两个方面的内容：软件和硬件。
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