The phrase "a massive and complex" is correct and usable in written English.
It can be used to describe something that is both large in size or scope and intricate in nature.
Example: "The project we are undertaking is a massive and complex endeavor that will require extensive planning and resources."
Alternatives: "a large and intricate" or "a substantial and complicated".
"A new government faces a massive and complex agenda of driving savings to close the deficit.
The transition to a renewable resource-based economy will be a massive and complex endeavor and its difficulty should not be underestimated.
Current and future surveys of large-scale cosmic structure are associated with a massive and complex datastream to study, characterize, and ultimately understand the physics behind the two major components of the 'Dark Universe', dark energy and dark matter.
He admitted to creating what John A. Danaher III, a United States attorney, called a "massive and complex fraud scheme" that siphoned about $208 million from insurance premiums paid to investment and insurance companies he created or controlled in the 1990's.
VICE caught up with Amit to see what brought him to take on such a massive, and complex project.
Refugee resettlement is a massive and complex enterprise that relies on the sheer will of its participants and order among its organizations to be successful.
It took shape during six years of design and construction, and was delivered exactly on schedule and on budget, a rare achievement for such a massive and technologically complex construction project.
The Chinese authorities reinforced the Great Firewall, their first line of defence against such sites.Control freaksThese days, whenever something happens that the Communist Party sees as a threat to social stability, China's internet managers set in motion a rapid, massive and complex response.
He says it wasn't just that he wanted to recapture the feeling of the space race, when scientists were treated like heroes, but that he wanted to get a sense of a project that massive and complex.
More recently, many of OpenStack's proponents had an AWS-shaped chip on their shoulders… and often a massive and unnecessary inferiority complex.
The caveat is that in a system this massive and complex there are so many variables it's difficult to forecast with much certainty.
