只有尝试着自我反省时，才能确定自己是谁，以及自己的信仰是什么。

When those people are tried and tested, they're going to have to decide who they are and what they believe in.

youdao

如果他们不自信，他们不会愿意去尝试新的形式去出错，而只有尝试新的事物及错误的纠正才有助于学习能力的提高。

If they were not, they wouldn't be ready to experiment with new forms and to make mistakes, all of which contribute to their increased ability to learn.

youdao

只有一件事可以尝试。

Only one of these to be attempted.

youdao

An unreinforced trial is when you get the food without the bell.

非强化尝试是只有食物而没有铃声的时候。

耶鲁公开课 - 心理学导论课程节选