performance reduction的用法和样例：
例句
- There is also performance degradation due to the latency associated with accessing a network share.
还有由于与访问网络共享相关的延迟而带来的性能下降问题。 - But as these flat networks scale upward, the volume of broadcast traffic increases and network congestion and performance degradation results.
但当这些简单网络向上扩大时，广播信息流的数据量就增大，从而产生网络拥挤和性能下降。
