off and on
... off and on 断断续续地 off and on 之字形驶风靠岸;断断续续地 off and on 之字形驶风靠岸断断续续地 ...
on and off
... noteworthy 值得注意的;显著的 on and off 断断续续的;偶尔;有时 rapid 迅速的;快速的;快的 ...
off and on ; in snatches ; on and off ; by fits and starts
Sleep fragmentation
断断续续,汉语词汇,拼音是duàn duàn xù xù,意思是时断时续地接连下去,出自《致台静农》。