In birds the secondfinger is the principal strut of the wing, which consists primarily of feathers.
鸟类的第二根手指是翅膀的主要支柱，翅膀主要由羽毛组成。
2
The secondfinger is two kinds of food to eat, 1 tomato.
第二个二指的是两种食物要长期食用，1西红柿。
3
Pls close up your thumb, then open your secondfinger, the finger represent brothers and sisters, they do have own family which is too they will leave us too.