on and off 断断续续贸易就是说不定期发售？

on and off 断断续续贸易就是说不定期发售？ 帮翻译一下On and Off Premise Turn the power off and on again the light keeps going on and off 在休息日是on the day off 还是in the day off 或者是其他,就是说day off前面的这个介词是什么?,急 翻译：She got on her bicycle and cycled off. switch it off and on at the plug,怎么翻译, on and off 可用其它的短语替代吗 project on-boarding and off boarding 是什么意思,谢谢! Completed.Turn the Power off and on again. off and off and He_____the bus and then_____the car.A.gets;gets on B.gets off;gets into Cgets off;gets on D.gets into;gets off “Hold on tight and off we go,” said the crocodile.请问这句话有没有错误,off是干嘛用的,把and off去掉是不是更通顺? Li Lei and Jim 什么 off their coats and 什么 them on the chairs Sometimes,on and off and do a lot of dreams,then wake. 关于一首恐怖童谣Father And Mother And Uncle John 爸爸妈妈和约翰叔叔 Father and Mother and Uncle John Went to market one by one.Father fell off -- Mother fell off -- But Uncle John went on,and on,And on,And on,And on,And on,And on ... 关于一首恐怖童谣Father And Mother And Uncle John 爸爸妈妈和约翰叔叔 Father and Mother and Uncle John Went to market one by one.Father fell off -- Mother fell off -- But Uncle John went on,and on,And on,And on,And on,And on,And on ...