virtual moment of inertia

例句：

1. 1. Thevirtual reality technology is still in its early stages.
   虚拟现实技术仍处于初级阶段。
2. 2. They are discussing the potential of a new product that is virtually identical to their existing one.
   他们正在讨论这个新产品的潜在价值，几乎与他们的现有产品一模一样。
3. 3. In this virtual world, we can communicate with each other without leaving our homes.
   在这个虚拟世界里，我们可以不用离开家就可以相互交流。