如果警察并没有因为太忙还是来了的话，他觉着有把握向他们证明他就是教授。
If the police aren't too busy to come, he feels confident he can prove to them that he is the professor.
现在，让我们假设在第二次迭代之后，您从一个负责人那获得反馈，但是您对他的观点并没有把握。
Now, let's assume that after iteration 2, you get feedback from a principal whose perspective you were unsure of.
有声电影的研制对卓别林来说倒成了问题，因为他对制作有声电影并没有把握。
The development of films with sound became a problem for Chaplin, as he was uncertain about making films with dialogue.
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