将这两组隔开是完全必要的。

It is essential to keep the two groups separate.

《牛津词典》

但是这些并不是完全必要的。

But they were not strictly necessary.

youdao

笔者通过对死刑和终身监禁的比较，认为死刑对于个别预防是完全必要的。

The author compares the death penalty and life imprisonment to prove that the death penalty for the individual prevention is entirely necessary.

youdao

What exactly that purgation will entail and why Milton's voice needs to be purged at all I think these questions are really the subject of the entire rest of the poem.

这种净化是很有必要的,弥尔顿的语言为什么需要被完全净化,我认为这个问题才是所有剩余诗歌,真正的主题。

耶鲁公开课 - 弥尔顿课程节选

The fact that I have this star here, this star here, this star here, is really just 'cause I'm a little anal and it looks pretty to make a little box out of everything but it's not strictly necessary.

事实上大家可以看到，这有颗星，这有颗星，这有颗星，其实是我手痒,这看起来像是用*围成个框，把它们包围起来,其实这是完全没有必要的。

哈佛公开课 - 计算机科学课程节选