stremma

例句：

1. 1. The farmer used his stremma to pound the ground for seeds.
   农民用他的铁砧敲打土地准备播种。
2. 2. The artist uses a stremma to create intricate designs on paper.
   艺术家使用铁砧在纸上创作复杂的图案。
3. 3. The children were playing with their stremmas when they heard the sirens.
   孩子们在玩他们的铁砧时听到了警报声。