proportioned development的用法和樣例：
例句
- One of the educational objectives of school is to attain a balanced development of students.
學校教育的目的之一是使學生得到均衡發展。 - The secondary curriculum aims at promoting students'all-round development,helping them to become well-balanced and responsible individuals.
中學課程的設計，是為中學生提供均衡發展的機會，讓他們全面發揮潛能，並培育他們成為有責任感的人。
