nigisu

例句：

1. 1. Nigisu is a traditional Japanese weapon that has been used for centuries.
   日本刀是传统的日本武器，已有数百年的历史。
2. 2. In samurai culture, nigisu was revered as the symbol of honor and courage.
   在武士道文化中，日本刀被视为荣誉和勇气的象征。
3. 3. The ninja were known for their mastery of stealth and precision in combat.
   忍者以其在战斗中的隐蔽性和精确度而闻名。