A few years back, IBM decided that because every other computer manufacturer in the world was using Ethernet, it would avoid the heartache of excessive compatibility by coming up with its own network called Token Ring.

• 几年前，IBM公司决定：由于世界上其他计算机厂商都在使用ethernet,它推出名为“令牌环”的网络，以避免过度兼容带来的麻烦。