The phrase "a lengthy segment about" is correct and usable in written English.
It can be used when referring to a substantial portion of text or discussion that focuses on a specific topic.
Example: "The article includes a lengthy segment about the impact of climate change on global agriculture."
Alternatives: "an extensive section on" or "a detailed part regarding".
And a fairly lengthy segment about the restoration of the frame of the National Gallery's "Virgin and the Rocks" provides no sense of what it looked like before.
The topic was a subject of a lengthy segment on "The Daily Show" Tuesday, and some students had been sending e-mails about their concerns to Northrop Grumman, the defense corporation weighing sites around the region for its corporate headquarters, urging them to avoid Virginia.
The big breakthrough, though, came last May, when Mr. Borgenicht and Mr. Piven appeared in a lengthy segment on ABC's "20/20".
Tonight the vice president taped a lengthy segment to be broadcast Wednesday morning on NBC's "Today," and aides said he was planning more interviews.
Actually, extraluminal air, a lengthy segment of thickened colonic wall, fistula, abscess formation and bowel obstruction are extremely rare in primary acute appendagitis [48].
It didn't help that ESPN ran a lengthy segment with the President making his March Madness picks that day.
A lengthy segment on Larry Wilmore's "The Nightly Show" included Holly Walker as "a big game hunter hunter". .
Melissa Harris-Perry, the MSNBC contributor who guest-hosted for Rachel Maddow on Tuesday, broke down the so-called "wealth gap" for her viewers in a lengthy segment.
When Jackson premiered a lengthy segment of "The Hobbit" at Comic Con on Saturday night, it was not presented in 48 frames per second, but the normal 24.
As the controversy around the error grew, Stephen Colbert even ran with the issue, mocking Doocy in a lengthy segment on his show.
