To becertainthat Rollie was talented, Mr. Ross ran a bright chimp through the same process and compared the results.
罗斯先生为了确认罗妮的确聪明,他对一只聪明的黑猩猩进行了相同的研究,并比较了研究结果。
2
The third, and most potent limitation is that it is not possible to becertainthat the infant's response was due to the stimulus presented or to a change from no stimulus to a stimulus.