The reporter passed her time in captivity reading, walking in circles around her cell for exercise and planning when she would wash her hair, because water service was intermittent, she added.

被囚的凌志美以看书打发时光，要锻炼身体就绕着囚室走几圈，想洗头发了就先计划好——她说这是因为水的供应总是断断续续的。

youdao

Series 2300 Direct Operated Water Pressure Reducing Valves are designed for dead-end water service where the flow is intermittent and changes rapidly, as on domestic water system.

系列2300直接操作水减压阀适用于室内水系统流量有间歇性变化和变化迅速的终端水应用场合。

youdao

After two days of intermittent service, Silk Road's administrators told users on Wednesday morning the site was back in action - but said they could not rule out further downtime.

BBC: Silk Road screenshot

There's a whole discipline, called queuing theory, on scheduling service to cope with intermittent demand.

FORBES: Hurry Up And Wait