to be or to experience an extreme example of sth unpleasant :
His latest novel plumbs the depths of horror and violence.
The team's poor performances plumbed new depths last night when they lost 10-2.
to be or to experience an extreme example of sth unpleasant :
His latest novel plumbs the depths of horror and violence.
The team's poor performances plumbed new depths last night when they lost 10-2.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005