middle leg (outer surface)
/ˈmɪdəl ˈlɛɡ ˈaʊtə ˈsɜːfɪs/
n
中文：中足
Meaning：Nonspecialized articulated member attached to the central segment of the thorax; it has a motor function and is used to clean the thorax and the wings. morphology of a honeybee: worker [1]