With a third group , she activated the squeak as if by accident .
对于第三组孩子，她展示发出吱吱声好像意外发出一样。
One particular bark , which has a telltale plaintive squeak to it , features more and more frequently .
有一种特别的叫声，带着告状的哀怨的吱吱声，越来越常出现了。
The squeak of a mouse tells most people to buy a mousetrap , but it tells some researchers a lot more .
听到老鼠的吱吱声，许多人都会想到去买个捉鼠器，但对于一些研究者而言，这叫声告诉它们更多的东西。
She interrupted herself after demonstrating the squeak by saying she had to go and write something down , thus suggesting that she might not have finished the demonstration .
她演示完怎样发出吱吱声后，声称要记下些东西而打断了（她的演示），因此暗示她可能没有完成演示。
The assistant was asked to record the total playing time , the number of different actions the child performed , the time spent playing with the squeak , and the number of other functions the child discovered .
