The phrase "a more ambitious task" is correct and usable in written English.
It can be used when comparing tasks to indicate that one task requires greater effort, skill, or determination than another.
Example: "Completing the project on time was challenging, but taking on a more ambitious task like leading the entire team will be even tougher."
Alternatives: "a more challenging task" or "a more demanding task".
Immediately he threw himself into a more ambitious task: a beechwood peacock with outspread tail.
In Sierra Leone, the UN is floundering, its original mandate in tatters, its forces not strong enough to succeed in a more ambitious task.
But fatally those same domestic details have nothing to do with why Elizabeth II, as queen, is interesting.Mr Marr, a former political editor of the BBC and author of some shrewd books on modern Britain, sets himself a more ambitious task: to explain what the queen's role and position tell us about her subjects.
A cutoff point policy is a more ambitious task, since it consists in the definition of a way to determine a cutoff point and the actual point where the list should be cut off, e.g., to keep the n top ranked terms of a list and a formula to estimate the value of n.
The New York Academy of Medicine is beginning an even more ambitious task: building a registry of every person -- from the firefighters to members of the New York City Transit tunnel crews -- who worked, even for a day, at ground zero.
It would also be a far more ambitious task than other efforts at building organs, like the manufacture of an adult trachea using stem cells over a sterile plastic tube as surgeons in Baltimore did.
You sail along for the next six months until you develop the need to do an even more ambitious task that involves designing a human-machine interface that will make your program more useful.
"They do not apply to old plants". The announcement was just the first step to fulfilling Obama's sweeping promises to act on climate change, and McCarthy said the EPA was already working with industry to ease the way for the even more ambitious task of controlling emissions from existing power plants.
In addition to signaling the shift from "preventing" towards the more ambitious task of "eliminating" new HIV infections among children, the plan also seeks to halve AIDS-related maternal mortality.
Helmut's resourcefulness might have impelled him to take on more ambitious tasks than he could quite handle.
But Underkoffler is sure that bigger screens, and gestures to control them, are going to become increasingly important as we move towards doing more ambitious tasks mediated directly through computers.
