If something happens yet again, it has already happened many times before.

I'm afraid it's been delayed yet again. 恐怕这又给耽误了。

Watching events unfold, I was reminded yet again of how quickly conflicts can escalate.

It looks as though Schwarz is likely to be convicted yet again.

He was forced, yet again, to return to the laboratory and start all over.

Yet again, we find ourselves dealing with problems caused by their carelessness.

See also: again (ONE MORE TIME)