It allows states to waive out of essential benefits like hospital care, spending caps and requirements surrounding pre- existing conditions.

它允许各州放弃基本福利，如医院护理、支出上限和对已有疾病的要求。

Some few naturalists, on the other hand, have believed that species undergo modification, and that the existing forms of life are the descendants by true generation of pre existing forms.

另一方面，一些少数博物学家相信物种会发生变异， 现存的生命形式是先前存在形式的真正世代的后代。