然后，当有人间歇性地上下拨动开关，那些灯会突然亮起或熄灭。
However, when someone is flickering the lights on and off intermittently, the lights are suddenly going off and on.
随着对水泵开关操作，气流检查连续或间歇高达2米，是可能的。
With a switching operation on the pump, air flow check continuously or intermittently up to 2 metres is possible.
“搭桥”开关模块，似乎很容易失败及间歇等。
The "bypass" switch module seems to be prone to failure and intermittency as well.
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