proportioned development的用法和样例：
例句
- One of the educational objectives of school is to attain a balanced development of students.
学校教育的目的之一是使学生得到均衡发展。 - The secondary curriculum aims at promoting students'all-round development,helping them to become well-balanced and responsible individuals.
中学课程的设计，是为中学生提供均衡发展的机会，让他们全面发挥潜能，并培育他们成为有责任感的人。
