The phrase "as a laborious" is not correct and usable in written English without additional context.
It may be used when describing something that is done with great effort or difficulty, but it typically requires a noun to follow it for clarity.
Example: "As a laborious task, the project took much longer than expected."
Alternatives: "as a strenuous" or "as a demanding".
He damned his last play, Aureng-zebe, as "a laborious trifle" and compared it unfavourably with Shakespeare.
In his preface to the novel, Congreve describes it as a "laborious idleness", no more than an "essay begun and finished in the idler hours of a fortnight's time".
What begins as a laborious struggle through ultra-dense plasma becomes a mere obstacle race through the cooler zones where atoms can survive, and the light by which you read this is finally released by yet another freak of solar physics.
Based on investigative journalist Jim Schutze's book on the killing, the film dallies in areas that are usually taboo for Hollywood movies: the possibility of a gay attraction between Marty and Bobby, sex as a something that is unromantic and even lacking in affection, and murder as a laborious and abject task.
These analyses used to be time consuming as a laborious search of various bioactivity information was required.
Shell's plans call for manually removing as much of this residue as possible, —a laborious process involving strainers, nets, sorbents, and skimmers but whatever sinks to the bottom can contaminate benthic ecosystems.
Distinguishing between truly significant outbreaks and normal disease incidence and to do so as early as possible is a laborious and imperfect science [ 1].
Such cost estimates are supposed to take into consideration every yard of concrete and every pound of steel needed for construction, as well as many other factors — a laborious task that can take one or two years for a team of estimators.
It is, as it should be, a laborious process and requires provable acts of treason, bribery or other "high crimes and misdemeanors" — very high bars indeed and difficult to define.
Over the next eight days, armies of lawyers and party operatives swarmed the state as elections officials undertook a laborious recount of the Senate vote and two other statewide elections, racing into courtrooms and onto the airwaves and social media to jockey over every ballot.
Hutton had to compute the individual attractions due to each of the many prisms that formed his grid, a process which was as laborious as the survey itself.
