食指与拇指交叉的手
hand with index finger and thumb crossed
指向观察者的食指
index pointing at the viewer
反手食指向左指
backhand index pointing left
反手食指向右指
backhand index pointing right
反手食指向上指
backhand index pointing up
反手食指向下指
backhand index pointing down
食指向上指
index pointing up