How to write the pinyin of backpack?

The pronunciation of "backpack" is [bēi bāo].

develop

The English word for "backpack" is backpack; ? Canvas backpack; Infantry package; Backpack; Bag; A handbag with shoulder straps for women.

Supplementary sentence making

1, carrying such a heavy backpack, I soon sweated.

When you take up your backpack for the first time and set foot on a distant road, you will never stop.

3. Once my father and I went to the park, and found that there was little wind and rain in Mao Mao. I quickly picked up the camera from my father's backpack and continued to take pictures.

I bought a backpack yesterday. It is red.