on and off

From Longman Dictionary of Contemporary Englishon and offon and off (also off and on)REGULAR for short periods but not regularly over a long period of time He’s been smoking for ten years now, on and off. → onExamples from the Corpuson and off• It rained off and on for the whole afternoon.• A large blue diamond was flashing on and off.• After she had left the office, Wyatt sat and listened to the ventilator go on and off.• After studying accountancy at Chicago University, he worked on and off as an investment analyst.• My husband has suffered from heartburn on and off for years and has recently been diagnosed as having a hiatus hernia.• With the other type switch on and off is non-automatic.• Then we went for a walk, with him continually flying on and off my shoulder.• There are thousands of tax-paying jobs generated on and off the reservation.• The spokeswoman says Disney has 50 to 70 toll-free numbers, which it turns on and off to coincide with special promotions.

单词	on and off
释义	on and off From Longman Dictionary of Contemporary Englishon and offon and off (also off and on)REGULAR for short periods but not regularly over a long period of time He’s been smoking for ten years now, on and off. → onExamples from the Corpuson and off• It rained off and on for the whole afternoon.• A large blue diamond was flashing on and off.• After she had left the office, Wyatt sat and listened to the ventilator go on and off.• After studying accountancy at Chicago University, he worked on and off as an investment analyst.• My husband has suffered from heartburn on and off for years and has recently been diagnosed as having a hiatus hernia.• With the other type switch on and off is non-automatic.• Then we went for a walk, with him continually flying on and off my shoulder.• There are thousands of tax-paying jobs generated on and off the reservation.• The spokeswoman says Disney has 50 to 70 toll-free numbers, which it turns on and off to coincide with special promotions.
随便看	longstanding longstanding debate etc longstanding dispute etc longstay longstay bed etc longstay hospital etc longstay patient longstay resident longstay ward etc longstemmed etc longsuffering longtail longtailed etc longterm longterm credit longterm debt longterm decline longterm funds longterm gilts longterm investment longterm liabilities longterm loan longterm loan longterm plan longterm security