时有时无的网络连接使故障查询工作更加困难。
The up and down network connectivity makes the troubleshooting matter even worse.
南非人民也应能想到，时有时无的电力供应问题将不会有改观。
Meanwhile South Africans can expect their lights to flicker on and off.
这可能造成时有时无的性能结果，这与测试时网络的利用率直接有关。
This can cause sporadic performance results depending directly upon the network utilization at the time of the tests.
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