The phrase "a long summary" is correct and usable in written English.
You can use it when referring to a detailed or extensive overview of a topic or text.
Example: "The report includes a long summary of the research findings, highlighting the key points and conclusions drawn from the study."
Alternatives: "an extensive summary" or "a detailed summary".
As well as publishing their judgment, they gave a long summary of the evidence and reasoning that led to their decision.
Its dramatic end came when the presiding judge, Carmel A. Agius of Malta, finished a long summary of what he called the "horrific crimes" of July 1995, "arrestive in their scale and brutality," and he asked the accused to stand to hear their sentences.
Heads up: HBO created a long summary of what happened in the first two seasons that airs before the premiere of Season 3, so you can easily just skip to the new episodes and still understand what's happening.
Quotes should not be used as filler, followed by a long summary or paraphrase of what you copied.
The assignment asked the students to write a paragraph long summary of a book they had read together as a class.
This version is known through the work of a Hellenistic author on the constellations; he gives a fairly long summary of Hesiod's discourse on Orion.
There's a nice, long summary of most of the news regarding Windows 7 here, but if you're following it at all, only a few things will be new.
The Guardian has an accessible, long, summary of the case.
Four types of composite scales were found to work best as the direct standardization variable for trichotimization: an IADL summary score (for 8 HC-QIs), the Cognitive Performance Scale (for 8 HC-QIs) [ 9], a clinical risk summary scale (for 6 HC-QIs), and the ADL Long summary scale (for 2 HC-QIs) [ 10].
Here is the summary of their study: (long summary follows) (No more posts on this thread).
An impressive long summary is given of experiments to prove that the results are not artifacts.
