求翻译：选修课有利于发展学生的兴趣和特长,随着年龄的增长，同学们的兴趣爱好、特长越来越明显。在初中阶段开始分化，到高中更加明显。是什么意思？

Elective course there is conducive to developing students' interest and expertise, increase with age, the students interests, more and more obvious strengths. Began to differentiate, at the junior secondary level to high school is more obvious.

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The elective course is advantageous in developing student's interest and the special skill, along with age growth, schoolmates the interest hobby, the special skill are more and more obvious.Starts in the junior middle school stage to split up, is more obvious to the high school.

Elective courses to develop the students ' interests and abilities, as she grew older, students ' interests, expertise is increasingly apparent. Stage differentiation in junior high school, high school and more.

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