The phrase "a unique and important" is correct and usable in written English.
It can be used to emphasize the distinctiveness and significance of a subject or object in a sentence.
Example: "This discovery represents a unique and important advancement in the field of medicine."
Alternatives: "a distinctive and significant" or "an exceptional and crucial".
The Sun occupies a unique and important position within News Corporation.
"The British Antarctic Territory is a unique and important member of the network of 14 UK overseas territories.
Women have a unique and important opportunity to transform philanthropic priorities and set new standards of giving.
The BBC plays a unique and important role, in Britain, in the world, as a trusted source of news that matters.
2014 sees the Observer/Anthony Burgess prize move into its third year, establishing itself as a unique, and important, prize in contemporary British arts journalism.
"Catalyst fills a unique and important place in Australian science journalism and we share concerns that a longer-format replacement would mean important and exciting scientific work was ignored," Ealy said.
The Libyan coast is "a unique and important and untouched ecosystem, almost the only one left in the Mediterranean — it's like Sardegna 50 years ago before development," said Alessandra Pome of the World Wildlife Foundation Fund for Nature, who is working in Tripoli.
SN0095 could be a unique and important parent in hybrid wheat breeding programs.
Herder argued that each group of peoples has a unique and important contribution to make to civilization.
In vivo 31P MRS provides a unique and important imaging tool for studying high-energy phosphate metabolism and bioenergetics noninvasively.
This paper outlines a unique and important extension of a recently introduced nonlinear identification method: Nonlinear Identification through Feedback of the Outputs (NIFO).
