从帽子里抽出来

names out of a hat, Kaufman says.───考夫曼说，相传这个名字从一顶帽子而来。

Dumbledore: Only a true Gryffindor could have pulled that out of the hat.───邓布尔多：只有真正的格里芬多人才可能将剑拔出。

children's eyes goggled as the magician pulled a rabbit out of the empty hat.───魔术师从空帽子中拉出兔子时，孩子们瞪大眼睛看着。