请打开书的第一页。

Please open the first page of the book.

打开书到第20页。

Open the book to page 20.

打开书到第45页。

Ope the book to page 45.

在你打开书之前，确保你是舒服的。

Before you open the book, make sure that you are comfortable.

请打开书,翻到十页.

Please open your books at page ten.

打开书翻到第14页。

Open your book to page fourteen.

学生们打开书.

The students unfurled their books.

还未打开书，我们几乎能感受到自己在放松。

Almost before we start reading we can feel ourselves start to relax and unwind.

他从书架上拿下一本自然书，把博比抱到膝上，打开书。指着一张长颈鹿的画片。

He took a book of natural history from the bookshelf, placed Bobby on his knee, opened the book and showed him a picture of a giraffe.

通常他们打开书就开始读，在大多数细节上进度缓慢。

Often they open the book and start reading, slowly and in great detail.