背篮

例句：

1. 1. She carried a small backpack on her back as she walked through the park.
   她背着一个小背包在公园里走着。
2. 2. He always carries a backpack when he goes hiking in the mountains.
   他每次去山区徒步时都背着一个背包。
3. 3. The backpack is filled with books, pens, and pencils for school.
   这个背包里装满了书、笔和铅笔，准备带去学校。