As medical knowledge evolves, beliefs change.是什么意思？

As medical knowledge evolves, beliefs change.

随着医学知识的逐步发展，观念也在发生变化。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

medical

adj. 医学的，医药的，医疗的，内科的；n. 体格检查；

例句
...a Code of Practice that would give patients right of access to their medical records.
允许病人查看自己病历的职业准则

knowledge

n. 了解，理解，知识（表示多方面的知识时有复数knowledges这一用法），学科，见闻；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

evolves

v. 演变，进化( evolve的第三人称单数 )，（动植物等 ）进化，进化形成；

例句
The tragic archetype of myth evolves into the contemporary tragedy.
神话中的悲剧原型演变为现代悲剧.

beliefs

n. 信，信任（belief的复数形式）；

例句
He does not think that his beliefs make him any worse than any other man.
他觉得自己的信仰并不让他比其他人更邪恶。

change

vt. 改变，变更，交换，替换，兑换，换衣服（床单）；vi. 改变，转变，交换，互换，换衣，更衣；n. 变化，改变，交换，交替，零钱，找头，代替物；

例句
There'll still be a feeling abroad that this change has to be recognised.
人们还会普遍觉得这项变革早晚得接受。