Even in middle and high schools, the math book can be 300 pages.
即使是在初高中，数学书也厚达300页。
为什么数学书看上去这么悲伤？
I opened the math book and started to read.
我打开了数学课本看了起来。
The math book is not on the table.
数学书不在桌子上。
The math book is on the dresser.
数学书在梳妆台上。
This is my bedroom. Look! The math book is on the dresser. The alarm clock is on the desk. A hat is under the chair. The video tapes are in the drawer.
这是我的一间卧室，你看数学书在梳妆台上，闹钟在桌上，帽子在椅子下，录音带在抽屉里…
This is my bedroom. Look! The math book is on the dresser. The alarm clock is on the desk. A hat is under the chair. The video tapes are in the drawer.
这是我的一间卧室，你看数学书在梳妆台上，闹钟在桌上，帽子在椅子下，录音带在抽屉里…
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