That sounds simple. But the issue is a complex mix of technical,business, political and legal questions.

VOA: special.2009.09.25

Her music is often described as complex but accessible, appealing to wider audiences.

VOA: special.2010.07.12

But Professor Rosen says the process is complex and may not work.

VOA: special.2009.06.09

But in addition to their high cost - three times that of a Humvee - the M-ATVs are mechanically complex.

VOA: standard.2010.08.01

It is a complex system of public and private insurance plans, regulated by the government but still giving individuals a good deal of choice.

VOA: standard.2009.09.28

But he warned 2010 would be "a more complicated and complex year", domestically and internationally.

VOA: standard.2010.02.14

But increasing trade with African countries may be more complex than it at first appears.

VOA: standard.2009.08.08

But it is often fast-paced and complex,and some musicians admit they don't always succeed.

VOA: standard.2010.05.28

But is that literally true? Kenneth Libbrecht says it depends on what kind you're talking about, but if you mean the classic, complex six-sided version, the answer is yes.

VOA: standard.2009.12.19

But other analysts say the story is not so complex.

VOA: standard.2009.10.30