The phrase "a complex operation that" is correct and usable in written English.
You can use it when describing a task or process that involves multiple steps or intricate details.
Example: "The project requires a complex operation that involves coordinating various teams and resources to achieve the desired outcome."
Alternatives: "a complicated procedure that" or "an intricate task that".
In 2017, she became the deputy director and chief curator at Dia, where she oversees a complex operation that includes acquisitions, exhibitions, programming, research, and publications.
Mr. Barrera, also known as El Loco, was arrested in September in Venezuela as a result of a complex operation that included the Colombian and Venezuelan authorities, the Central Intelligence Agency, the Drug Enforcement Administration and the British intelligence.
The ambition to make the world more picture like, for all its intuitive simplicity, was actually a complex operation that required the invention not only of new ways to plan and design, but also new ways to theorize relationships between design and its audience.
Officials said tonight that the United States attack on five Libyan targets was a complex operation that involved separate attacks by Air Force and Navy planes and the use of aircraft for refueling, intelligence and electronic jamming, The operation involved two strikes on separate regions of Libya, the officials said.
But the new information from BP — combined with past testimony by executives, analysis of documents by The New York Times and interviews with independent drilling experts — is beginning to paint a picture of a complex operation that went awry just as it was drawing to a close.
"This was a complex operation that made heroes of soldiers under difficult combat conditions," he said.
Or we could do an arterial bypass, a more complex operation that would save her leg but that might disable or even kill her before her surgical scars ever healed.
"Shell can't get away from the fact this has been a difficult, complex operation that didn't go well," said Lois Epstein, an environmental engineer at The Wilderness Society and a member of an Interior Department advisory panel on offshore drilling safety.
The children are allowed in as part of Israel's "Good Neighbors" program, which began treating injured Syrian fighters and civilians in the early days of their country's civil war but has expanded into a more complex operation that also sends fuel, food and supplies into Syria.
Perhaps the most audacious and certainly the most lucrative were his years of smuggling serious weight to JFK airport in New York, a staggeringly complex operation that saw the Yakuza, Mafia, Thai army, customs, and even Nepalese monks involved in some capacity.
'From my knowledge of the people involved, I am convinced that that was an extremely complex operation that could not have been accomplished by the individuals identified as having participated in the official accounts,' he told the commission.
