The phrase "an unavoidable task" is correct and usable in written English.
You can use it to describe a task that cannot be avoided or escaped, often implying a sense of obligation or necessity.
Example: "Completing the annual report is an unavoidable task for all team members."
Alternatives: "a necessary task" or "an inescapable task."
Thus, setting priorities in health care emerges as an unavoidable task.
Currently, the increasing interest in multimedia applications has made the QoS (quality of service) supporting an unavoidable task.
The texture analysis of multiple subjects can be performed automatically without user intervention, which is extremely helpful for processing a large amount of data, an unavoidable task for future studies aiming to evaluate the heterogeneity quantification of molecular images.
Pippin believes that we continue to inhabit the world of modernity made possible and, more importantly, made difficult by Kant's posing of the unavoidable task of becoming a person, and indeed a person alongside, in solidarity with, as well as opposed to, other persons.
Clark Hoyt's "Lost in the Shorthand," which is an essay by the paper's public editor on the perils of the unavoidable task of slapping labels on people's political positions.
That to me seems to be the unavoidable task in any search and seizure case: was the particular search and seizure reasonable or not?
MPs have used their muscle twice this week, first ripping up the parliamentary rulebook on Monday in the unavoidable task of providing the leadership that May failed to give; and second, with a 44-strong majority today, by foiling the government's malicious attempt to derail the process at the first attempt.
Now -- as people of conscience and as leaders -- we must commit ourselves to the difficult but unavoidable task of changing that culture". The 1999 report in the School of Science, chaired by Professor Nancy Hopkins, was strongly supported by former Dean Robert J. Birgeneau, now the president of the University of Toronto.
As a result, the generation of optimal concurrent implementations is an unavoidable but difficult task.
The entire management team in the HR department confronted an unavoidable fact: some of the task force members were designing themselves out of a job.
Not a simple task, but for Twitter an unavoidable one.
