我们不能猜测他的动机。

We cannot guess his motives.

youdao

我们不能根据传言和猜测作决定。

We can't make a decision based on hearsay and guesswork.

《牛津词典》

我们经常会碰到新事物，如果我们不能学习，不能猜测，不能纠正对新事物猜测，我们就无法生存。

We see novel things all the time and if we were not capable of learning and making guesses, educated guesses, about these novel things we would not be able to survive.

youdao

We see novel things all the time and if we were not capable of learning and making guesses, educated guesses, about these novel things we would not be able to survive.

我们经常会碰到新事物,如果我们不能学习，不能猜测，不能纠正对新事物猜测,我们就无法生存。

耶鲁公开课 - 心理学导论课程节选