雷德斯基通过对多对母子进行用餐测试实验，研究手机和平板电脑在用餐时的使用情况。
Radesky has studied the use of mobile phones and tablets at mealtimes by giving mother-child pairs a food-testing exercise.
这既小又薄的平板上有一个触摸屏，上面显示着执行各种任务时所需的按键图标。
The thin, small slab has a touch-screen which displays whatever buttons, keys or icons are relevant to the task in hand.
其他人在介绍这一设备时称该平板设备带有虚拟键盘。
Other people briefed on the device say the tablet will come with a virtual keyboard.
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