The phrase "a complex one for" is correct and usable in written English.
It can be used when discussing a situation, problem, or topic that is intricate or difficult, particularly in relation to a specific subject or audience.
Example: "The issue of climate change is a complex one for policymakers to navigate, given the various economic and social factors involved."
Alternatives: "a challenging matter for" or "a difficult issue for".
Virtually all of Mr. Bush's tax cuts are set to expire at the end of 2010, and the issue of whether to extend some or all of them sharply divides the parties and is a complex one for the Democratic candidates on both political and fiscal policy grounds.
By using a simple arbitrary model as well as a complex one for the fault region in Western Nagano, Japan, we demonstrated that the DA method is an effective alternative for the standard method.
It should be noted that the relationship among channel abundance, channel activity, and survival is a complex one for both MscS and MscL.
The debate around the living wage is ongoing and a complex one for a number of companies, including ours.
Area: 603,700 sq km (233,100 sq mi) Population (1997 est).: 50,668,000 Capital: Kiev Chief of state: President Leonid Kuchma Head of government: Prime Ministers Pavlo Lazarenko until July 2 and, from July 16, Valery Pustovoytenko The year 1997 proved a complex one for Ukraine, with continuing tensions between president and parliament and between president and prime minister.
But these public pleasantries do not change the fundamentally awkward arrangement -- by no means unique to the trade center site -- that arises when prominent architects are compelled to work together, one of them on a master plan for a complex, one of them on a building design within the complex.
The answer is a complex one but for now BlackBerry plans to reassure people the old-fashioned way — by writing a letter.
However, that there is a uniform semantics (even a very complex one) for generic claims, one moreover that "analyzes away" kind talk, is a strong empirical claim about language, one that does not receive strong support from current efforts to analyze generic claims.
But America's relationship with the group is a complex one, since agents for the group helped unveil Iran's nuclear program in 2002.
A morally complex one, for sure.
Since the heavy ion transport problem is a complex one, there is a need for both experimental and theoretical studies to develop accurate transport models.
