委员会需要时间来吃透这个报告。

The committee will need time to assimilate this report.

这本书不是一下子就能吃透的。

The book cannot be understood at one swoop.

他们学得很好，但似乎需要时间来吃透这些知识。

They learn well but seem to need time to digest information.

很少有人能把整个英语语言吃透弄懂，那我们这些芸芸大众只要尽力掌握就可以啦！

Very few people will ever master the entire language and the rest of us will just have to do the best we can!