In elementary school and junior high, students have such a variety of skill levels and effort levels.
在小学和初中，学生的技能水平和努力程度不同。
2
Because in elementary school and junior high, you have such a variety of skill levels and effort levels.
因为在小学和初中，你有各种各样的技能水平和努力水平。
3
As the result, application development can reduce time, cost and skill demands, and the portal users can access the wide variety of information effortlessly.