3 sentences

1. 他手里操着一把短刀。

   tā shǒu lǐ cāo zhe yī bǎ duǎn​dāo.

   He was wielding a short knife.

   Source: Dong Chinese Dictionary

2. 他的腰间别着一柄短刀。

   tā de yāo​jiān bié zhe yī bǐng duǎn​dāo.

   He had a short sword tucked into his waist.

   Source: Dong Chinese Dictionary

3. 这把短刀的刀锋在阳光下闪烁着寒光。

   zhè bǎ duǎn​dāo de dāo​fēng zài yáng​guāng xià shǎn​shuò zhe hán​guāng.

   The edge of this dagger gleamed in the sunlight.

   Source: Dong Chinese Dictionary