duànduànxùxù
斷斷續續
on and off // off and on
Examples:
1.Yǔ duànduànxùxù xià le yì tiān.
雨斷斷續續下了一天
It rained on and off all day.
2.Wǒ zàinàlǐ duànduànxùxùdegōngzuòlewǔnián.
我在那裡斷斷續續工作了5年
I have worked there on and off for for five years.
3.Tā duànduànxùxùdewánchéngle tādeyǎnjiǎng.
她斷斷續續完成了演講
She finished her speech on and off.