 Kọ itẹsiwaju fun paragirafi yii - Idije afẹfẹ ti awọn obinrin ti FIS Freestyle World Ski Championships 2011 : a ṣe ni Deer Valley, United States ni ọjọ kẹta ati kẹrin, oṣu keji, ọdun 2011 awọn ipele ati ipari. 