middle
The social group between the upper and working classes, including professional and business workers and their families.
中学
A school for children between elementary school and high school, usually grades 6-8.
介于小学和高中之间的学校，通常指6-8年级。
The period of life between young adulthood and old age, typically from about 45 to 65.
The third and typically longest finger of the human hand, situated between the index finger and the ring finger.
中层管理
The level of management in an organization that is below senior management but above the lowest levels of operational staff.
组织中低于高级管理层但高于基层操作人员的管理层级。
A manager who is in the middle of the organizational hierarchy.
The air-filled central cavity of the ear, behind the eardrum.
The period of development from about age 6 to 12.
The English language from about 1150 to 1470.
Refers to a group of people whose income or age is in the middle range.