The phrase "a large and ongoing" is correct and usable in written English.
It can be used to describe something that is significant in size or impact and continues over a period of time.
Example: "The organization is facing a large and ongoing challenge in addressing climate change."
Alternatives: "a significant and continuous" or "a substantial and persistent".
This is a large and ongoing issue that is definitely not resolved".
For one thing, his portfolio includes documentary views of poor neighborhoods in 1930's Florida, as well as landscapes, still lifes, collages and a large and ongoing series of abstractions.
These results illustrate that the encroachment of PJ forests in SE Utah over the last century has resulted in a large (and ongoing) accumulation of carbon in PJ trees and surface litter.
Given that the Everglades restoration includes a large and ongoing research effort, there is a need to efficiently test and explore potentially useful algorithms in an adaptable, ecological modeling engine.
Each of these steps represents a large and ongoing challenge, but they are essential to living a life that has unique meaning to you.
And because the increased wages would go to households that tend to spend every dollar they earn, the proposal would represent a large and ongoing economic stimulus package, helping to revive the consumer spending that drives the economy, but with the funding coming entirely from the private sector.
"Wind was probably not the biggest factor last night to this morning — it's probably more the complex terrain, very dry and possibly widespread fuels for the fire and the fact that it's a pretty large and ongoing fire," said Robbie Munroe, a meteorologist with the National Weather Service.
For example, a sufficiently large and ongoing decrease, made possible through technological advances, in what Marx called "socially necessary labor time," that is, the amount of time required for the production of a single type of product, if replicated across enough different products, could by itself bring about a lengthy postponement of the system's collapse.
The Paratyphi A outbreak in Cambodia appears to be large and ongoing.
But the small potatoes are part of a much larger and ongoing fight about debt and deficit spending in Washington.
