"Get your book bag, sweetie," I said.

“拿上你的书包，宝贝，”我说。

You have a black book bag.

你有一个黑色的书包。

I have a blue book bag.

我有一个蓝色的书包。

Night, as if sleeping in the book bag.

晚上，好像睡在书包。

He's in the book bag.

他在书包里呢。