我用小木颗粒来生火。

I use small wood ___pellets to start the fire.

孩子们用气枪射出小塑料弹丸来练习射击。

The kids practiced shooting by firing small plastic ___pellets from their air guns.

我在清理鸟笼时发现了许多小颗粒。

I found many small ___pellets while cleaning the birdcage.