他的右臂向头的一侧伸开，手上还紧紧握着一只咖啡杯。
His right arm was extended up beside his head, still holding on to a coffee cup.
我们的第二个研究是关于音乐的，在这项研究中，研究人员通过位于人脸两侧的扬声器向婴儿播放音乐。
Our second study is about music, for this study researchers play music to babies through speakers located on either side of a human face.
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