As Katharine Hepburn became older, she played more and more wise and complex characters.

VOA: special.2009.09.20

And his theories about waterways and complex life on Mars have been disproved.

VOA: special.2010.07.11

Kilims are woven with many bright patterns and complex geometric forms.

VOA: special.2009.11.04

His task also was difficult and complex.

VOA: special.2010.07.14

And he is praising four committees in Congress for agreeing on what he calls "a difficult and complex challenge."

VOA: standard.2009.08.08

U.S.officials have acknowledged early on that bringing the Israelis and Palestinians back to negotiations will be a long and complex process.

VOA: standard.2009.10.31

President Obama says he never had any doubts that closing Guantanamo would be difficult and complex.

VOA: standard.2009.05.21

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

VOA: standard.2010.02.14

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

VOA: standard.2010.05.28

In the nineteen nineties, Gebisa Ejeta and another Purdue researcher, Larry Butler, identified the complex relationships between Striga and sorghum plants.

VOA: special.2009.06.16

The archeologists say its discovery helps show that early modern human beings in Europe had a complex and creative culture.

VOA: special.2009.08.18

Detective Superintendent Julian Gregory will say only that the case is complex and will take more time to finish.

VOA: special.2010.04.27

Not officials,locals." Oliver Williamson has studied big companies and found that they often are better than markets at doing complex jobs.

VOA: special.2009.10.16

And,he says that is good news because the world needs creative thinkers to help solve increasingly complex problems in the future.

VOA: special.2009.04.24