'sustain' is correct and usable in written English. You can use it to describe ongoing support or maintenance of a certain process or status. For example, 'The town has been able to sustain their high quality of living.'.
So many grouse-guzzling hen harriers thriving in the area meant the grouse population was reduced too far to sustain a commercial shoot.
If it wishes to sustain public service broadcasting there needs to be certain things that help sustain it, that you trade for those [PSB] obligations and one of those things historically has been EPG prominence," he added.
On the Iraqi front, analysts say the US has to decide how many more victories by Isis it can sustain before increasing support to the underperforming Baghdad government forces on the ground.
We don't need to sustain clowning if clowning has become anachronistic.
This budget really throws off any hope that mining might sustain us.
JH: But the problem is, how are the scriptwriters going to sustain all this?
"In particular, I believe that we should be working closely together in identifying opportunities for building north-south economic development, and make sure that those opportunities become a reality in a way that will build jobs and sustain communities on both sides of the border," Gilmore said.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com