身体有一个需要时间的自然愈合过程。

The body has a natural healing ___process that takes time.

我们需要理解做出此类选择背后的心理过程。

We need to understand the psychological ___process behind making such choices.

从毛毛虫到蝴蝶的转变是一个迷人的自然过程。

The transformation from caterpillar to butterfly is a fascinating natural ___process.