gunnysack

例句：

1. 1. He carried his gunnysack filled with supplies on his back.
   他背着装满物资的军用背包。
2. 2. Thesoldier was carrying a gunnysackfull of food and water.
   士兵背着一个装满食物和水的军用背包。
3. 3. Thepilot had to carry his gunnysack of gear in the cargo hold.
   飞行员不得不把他的装备放在货舱里，背着军用背包。