This was demonstrated in a laboratoryexperiment with rats.
这点通过在实验室中用老鼠做试验得到证明。
《柯林斯英汉双解大词典》
2
When the researchers repeated the laboratoryexperiment on the second and third nights they found the left hemisphere could not be stimulated in the same way during deep sleep.
当研究人员在第二和第三晚重复实验室里的实验时，他们发现在深度睡眠时左脑不能以同样的方式受到刺激。
3
Methods Laboratoryexperiment and field experiment.