Synchronous availability guarantees that the data sources on primary and secondary systems are identical, and complete data continuity is maintained after a failover.
同步可用性保证主系统和辅助系统上的数据源是一致的，完整的数据连续性是在故障转移之后维护的。
2
Most coaches'training plans are not complete and lack systematic training plan and continuity, and most coaches seldom train the mental ability of the athletes;