packsack造句

Propspectors Airways would only pay for a packsack drill.
Carrying it back and forth in the packsack made no difference to it.
JanSport started by developing the external frame backpack, which used a metal frame with a cloth packsack attached to it; the products made include technical day packs and internal frame backpacks.
It's difficult to see packsack in a sentence. 用packsack造句挺难的