The phrase "has largely expanded" is correct and usable in written English.
You can use this phrase when talking about a particular subject or area that has experienced rapid growth or expansion. For example, "The online education market has largely expanded over the past decade."
For though he is so often seen as American, he has largely expanded beyond that now.
The scope of AR research has largely expanded from early AR design and deployment to improve fisheries to various additional purposes.
Today, nearly all sub-Saharan African countries show increasing outflows of health workers, whilealso the variety of destination countries has largely expanded.
Among these tools, cytometry by time of flight mass spectrometry (CyTOF) has largely expanded the capability for deep interrogation of the immune system, previously eminently relying on fluorophores.
Metagenomic analyses of viruses have largely expanded since those initial studies, leading to the discovery of novel groups of viruses and virus-like agents that collectively constitute a huge genetic reservoir (Kristensen et al. 2010; Suttle 2007).
However, in today's competitive market, the concept of product development has largely been expanded to accommodate and integrate critical product-related aspects such as consumer perception, product attractiveness, value appreciation, market niche and anticipated performance over a product's lifecycle.
Annotation of these and 63 additional (non-differentially expressed) cldn transcript tags via Swiss-Prot BlastX mainly matched mammalian claudins 3 and 4, but it was not possible to distinguish between fish claudin paralogues, as this gene family has been largely expanded in teleost fishes [ 29].
Rodents have a largely expanded V1R repertoire with over 100 genes, whereas dogs have 8 and humans have no V1Rs [ 21].
But it has largely failed to expand its narrow vision of beauty, with no apparent concern for the impact on its young, female audience.
The official also said that the investigation had not largely expanded beyond the three men.
The family-owned company has paid out millions in dividends, according to an internal document, although the company claims the money has largely been reinvested in expanding the business.
