"precious contribution" is a correct and usable phrase in written English.
It can be used in various contexts, but it is typically used to describe something valuable or significant that someone has added or provided. Example: Sarah's research on climate change has made a precious contribution to the scientific community's understanding of the issue.
Impressive as his career with country and county has been, he made a more precious contribution to cricket with his book, Coming Back to Me, in which he opened up about his depression.
Should I point out the most precious contribution among the many he gave to contemporary philosophy, I would mention his anti-skeptical arguments, as embedded in his general theory of meaning and truth.
We thank all the nursing staff for their precious contribution during the study.
In addition to these key residues, Ser 205 also has precious contribution to the activity.
We are grateful to Yann Guiguen for help and precious contribution to fund raising for this study.
We thank Emanuela Scarpi, Giovanni Zaninetta, Maria Grazia Rusconi, Patrizia Ferreri, Libero Ciuffreda, Franco Marinangeli and Cecilia Moro for their precious contribution to data collection.
Entertainment website IndiaGlitz praised Mahendran for having "used the novel to the best effects" and called the film as one of his most "precious contributions".
In the same sense the wrong trees planted in the wrong places--and trees planted without being cared for--can at best waste resident's precious contributions of good intentions, time and money.
Mr. President, I have seen first-hand how Rotary's contributions have helped ensure the success of National Immunisation Days all over the African continent, and how precious those contributions are to children in places like the Democratic Republic of the Congo, where Rotary International contributed $500,000 for an emergency airlift to deliver polio vaccine to several remote regions.
We thank Professor Vito Giustolisi and Dr Kevin Jiang for their precious and helpful contribution to the study.
The virtual variables can be seen as local mappings of the target variables onto an input space, and provide a precious insight on the contribution of the different input quantities.
