a reciprocating saw的用法和样例：
- They have a reciprocal loathing for each other.
- They have a reciprocal agreement to combat terrorism.
- Haiyan United Hacksaw Factory (HUHF) was established in the early 90’s.It is a professional curve and reciprocating saw manufacturer.
- A reciprocal condition or relationship.
- Valves are not to be used near a reciprocating air compressor.