Collecting the raw materials proved a long and laborious task. the laborious business of drying the cropslaboriousla‧bo‧ri‧ous /ləˈbɔːriəs/ adjective 
Collecting the raw materials proved a long and laborious task. the laborious business of drying the crops—laboriously adverb: A beetle began to crawl laboriously up his leg.
EXAMPLES FROM OTHER DICTIONARIES
- For Perry, writing is a laborious process.
COLLOCATIONS FROM THE ENTRY Collecting the raw materials proved a long and laborious task. the laborious business of drying the cropsCOLLOCATIONS FROM OTHER ENTRIES
taking a lot of time and effortlaborious process/task/business etc Collecting the raw materials proved a long and laborious task. the laborious business of drying the crops (=taking a lot of time and effort)· The copying of manuscripts was a laborious process.
COLLOCATIONS FROM THE CORPUSNOUN· Then he could sleep through the drive and the laborious business of make-up.
· It is a laborious process, likely to lead to embarrassing blunders if badly done.· But boiling the grain was a laborious process and produced an unpalatable mush.· Producing these on conventional printers is a very laborious process and the results will only be in black and white.· Analysts warn that it will be a long, laborious process.· Used as an additional resource, a different dimension which adds to an otherwise laborious process, programs can be very effective.· And yet, if we are asked to multiply by five, we will usually go through a fairly laborious process.· Waxing is a very laborious process and the wood will require re-waxing at regular intervals.· He used a small mechanical calculator to solve each problem, a laborious process later rapidly accomplished by computer.
· It is recognised, however, that this would be an extremely laborious task and unlikely to be fulfilled.· Since everyone enjoyed the results of this laborious task, it seemed only fair that everyone participate in their production.· Finally it was taken into the adjoining paint shop where the painting was done by hand, a laborious task.· The laborious task of contacting all the men on the list from London Life cranked into life.· The estates had been neglected in the war and Sharpe had begun the laborious task of repairing the years of neglect.· We began our laborious task without once reflecting on the many dangers that might attend it.
Collecting the raw materials proved a long and laborious task. the laborious business of drying the crops—laboriously adverb: A beetle began to crawl laboriously up his leg.