更精确地说是，TTS引擎可以比较准确地猜到你能拼写出的任何词的发音，并将这种发音赋予该词，但识别器却必须有要识别的词的发音。

More precisely, the TTS engine can make a pretty good guess at pronouncing most anything you can spell and give it, but the recognizer must have a pronunciation for the words to be recognized.

youdao

这就是MOM的作用：精确地按照您希望的次数，将消息可靠地提交到准确的位置。

This is where MOMs shine: reliably delivering messages exactly as many times as you want them delivered, to the place where you want them delivered.

youdao

你能够进行一次非常精确地测量，但是它并不非常准确？一个数字可以是。

Can you make a measurement that's very precise, but not very accurate? Can a number be.

youdao

And the reason that we use it is that it is incredibly accurate, and allows us to very, very quickly predict and to predict accurately, in most cases, what the electron configuration of molecules are going to be.

我们用它是因为它极为精确，并且能让我们非常非常快地预测,而且是准确地预测，大多数情况下，分子应该具有的电子排布。

麻省理工公开课 - 化学原理课程节选