“在书”造句

你会在书的前面找到略语表。
You will find a key at the front of the book.

他挥手指了指一把椅子，自己在书桌旁坐了下来。
He waved towards a chair, and seated himself at the desk.

吃早饭的时候他已坐在书桌前了。
By breakfast-time he was already at his desk.

• #在书