I think reference books, having a good dictionary is absolutely essential.

我认为参考书、一本好字典是绝对必要的。

While there are other ways to expand your concept library, I think books are the most efficient.

虽然还有其他方法可以扩展概念库，但我认为书籍是最有效的方法。

Think of ways that you've worked to improve, any books that you've read, classes you've taken, and so on.

思索一下，你所实施的改进方法，你读过的书籍、你学习过的课程等等。

I think books are a cool way to learn a language.

我认为书籍是学习语言的一种很酷的方式。

Actually, l think books are coming back.

看书的风潮再度流行 你可以在公车广告上看到我。

I think books are an amazing way to go inside of yourself and outside of yourself.

我认为书籍是一种了解自己内部和外部的奇妙方式。

The first reason I think books are amazing is because you can read a book at your own speed.

我认为书很棒的第一个原因是因为你可以按照自己的速度阅读一本书。