"Keeping track of everything is an arduous task, and there's never been a clear system, " he said.

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The rest of the afternoon was spent pulling in lines, an arduous task.

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Harvesting stem cells from the body is an arduous task, in part because so few of the cells exist in people.

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Envisioning a social base, a social engine and a social glue to create a true culture is an arduous task, much more than merely echoing fashion or momentary trends.

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Despite some of the best roads on the continent and a number of high-profile infrastructure projects, including a high-speed train and a bus service built for the 2010 football World Cup, commuting in Johannesburg is often an arduous task for millions of people.

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She said he could not really explain why he had done that, but said digging out the auger manually was an "arduous and laborious task".

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Crooke's first task, an arduous one, was to find out how big the drug should be to best target RNA. RNA strands stretch thousands of nucleotides long, and there may be only one offender out of 100, 000 different strands floating in a cell at any given time.

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During his statement, he said the jury had faced an "intense, complex and arduous task" and that he had been convicted by the "narrowest majority".

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Though changing values is not an absolute prerequisite for restructuring, the task will be less arduous if strategies acknowledge the interplay of cultural forces, enabling reformers to avoid potential roadblocks.

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