Will a loan of $500 be sufficient?
If I buy two pounds of fish that should be sufficient for four people.
I'm not convinced we have sufficient funds to do this project.
An original paper should not include an extensive review of the literature, but only sufficient references to indicate the purpose and relevance of the investigation.
Because my research started out by locating sufficient conditions for stability in heterogeneous capital goods models, and that problem still fascinates me to this day.
If the solution to (7) is unique, then (7) is also a sufficient condition.