The phrase 'laborious years' is correct and usable in written English.
You may use it to describe a period of time in which there was a lot of hard work or difficult circumstances. For example, "We endured many laborious years together, but ultimately our efforts paid off."
IT was a few minutes after seven yesterday, the morning skies brightening over Churchill Downs, when Stewart Elliott walked up to Barn 42 and inhaled the aroma of Kentucky Derby week, after a wait of more than 20 laborious years.
They were then told to return "by another way"; starless this time, with no God-assisted steering, they took two laborious years over it, seeking directions from everyone en route.
Laurent Fabius, the smooth-suited French Foreign Minister who was the president of the meeting, looked particularly pleased with himself, and President Barack Obama tweeted his unalloyed delight – he had a big hand in the agreement and it will represent a major part of his political legacy – but the treaty which has been four laborious years in the making is simply not enough.
He worked with Mr. Marsden to fine-tune the Swype software -- which took a laborious seven years.
This is a laborious process, taking years just to get a rough idea of where a gene resides.
The strategy was imperfect and laborious, but last year six of the school's twenty-six students received full scholarships to Dartmouth, Eastern Connecticut State University, Hampshire, Berea, and Tougaloo.
There's 50 years of laborious pastiche here, but not a lot of point.
He bought presses, designed typefaces, and after years of laborious work, produced in 1757 a complete edition of the works of Virgil.
My colleague Katherine Boo won the National Book Award last year for "Behind the Beautiful Forevers," her chronicle of a Mumbai slum, which was based on three years of laborious interviews and documents.
Since 1999, when the F.B.I. computerized its fingerprint database, its crime lab has matched about 1,200 crime scene prints, more than five times the number found in 15 years of laborious manual matching, said Stephen Meagher, the head of the lab's latent print operation.
So yes, if you work in an academic field along with a berk who thinks he's House and come under scrutiny for your years of laborious research not allowing you to solve a crime in under three minutes, thank television.
