The heating's been turned off. I've turned it on again.

暖气已经被关掉了，我已经又把它打开了。

《柯林斯英汉双解大词典》

We were without electricity for three hours but it's on again now.

我们停电三个小时了，不过现在又来电了。

《牛津词典》

Having done these things, he went on again.

做完这些事，他又继续往前走。

youdao

On May twenty-eighth,eighteen ninety-eight, the Yukon River could again hold boats.

VOA: special.2009.02.11

On page 174--Again, check and see if this is the same in your edition.

第174页，又一次，查看，这是不是与你们手中版本的页码一样。

耶鲁公开课 - 1945年后的美国小说课程节选

And I'll just point out here also, this is a conversion factor you'll use quite frequently -- many of you, quite on accident, will memorize it as you use it over and over again.

你们会经常用到，所以你们可能,会不小心记住它的值，但我们并不会在,任何考试中。

麻省理工公开课 - 化学原理课程节选

That case was settled, and Brown and Hynie had an on-again, off-again relationship until he died.

FORBES: Court Scolds SC Attorney General For Hijacking James Brown Estate

Given the show's on-again, off-again history, one has to wonder: Is this really the end?

CNN: 'American Chopper' ending after 10 years

The Bank of Japan should cease its usually on-again, occasionally off-again, deflationary course.

FORBES: Fact and Comment