The phrase "again essential to" is correct and usable in written English.
It can be used when emphasizing the importance of something that has been previously mentioned or is being reiterated.
Example: "The findings of this study are again essential to understanding the impact of climate change on biodiversity."
Alternatives: "crucial once more to" or "vital again for".
He thinks a third set of policies, to promote innovation and entrepreneurship, is likely to produce faster results".Getting the innovation engine going again is essential to reducing the structural rate of unemployment," says Mr Phelps, the economist, dismissing the idea that innovation might actually destroy jobs by making production more efficient.
Evaluating how they were able to get away with such fraud, and setting up an effective regulatory system to prevent it from happening again is essential to restoring foreign investors' faith in our country.
"Reconstructing the schools and ensuring that children can go back to their classrooms and feel secure again is essential to their recovery," said Ms. Coomaraswamy.
Again, this was essential to the functionality of our system because it was not blocking.
Reaching and exploring them would be a multi-generational undertaking, so again it is essential to plan and prepare.
Once again, it seems essential to give the young victims faces — Mayci Breaux, who was just twenty-one, and Jillian Johnson, who was thirty-three.
The rapid diagnosis of the disease, should it appear again, will be essential to reducing the number of civilians who will die.
Once again it is essential to understand and appreciate individual differences.
Again, it's essential to be guided by the idea that you get what you pay for.
This was done, and again at the end of the 1959-1960 school year he was once again declared to be essential to the university, and once again reluctantly agreed to stay for one, but only one, additional year.
