torsion free commutative group

例句：

1. 1. The design of this torsion-free commutative group is innovative and practical.
   这个扭力自由交换群组的设计既创新又实用。
2. 2.The torsion-free commutative group has been widely used in various fields.
   扭力自由交换群组在各个领域都有广泛的应用。
3. 3.The torsion-free commutative group provides a new approach to solving complex problems.
   扭力自由交换群组为解决复杂问题提供了一种新的方法。