It's no accident that our ability to forget, like our ability to remember, is a complex and finely-tuned mechanism.

我们的遗忘能力像记忆能力一样，是一种复杂且精调过的机制，这并非偶然。

We don't quite understand, but there are some complex mechanisms why those medications just don't work for some women.

我们不太明白，但有一些复杂的机制可以解释为什么这些药物对某些女性不起作用。

And there may be other mechanisms we don't quite understand yet, because it's a possibility that pain thresholds could be different due to very complex biological mechanisms. But we're only going to find that out by taking about it.

并且可能还有其他我们还不太了解的机制，因为由于非常复杂的生物学机制， 疼痛阈值可能会有所不同。 但我们只能通过实践来发现它。