并且有助于提高中学生的英文水平。的翻译：And helped to raise the English standard of students. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

And help to improve the English level of secondary school students.

And helped to raise the English standard of students.

And is helpful in raising middle-school student's English proficiency.

And to help improve students English level.

And helped to raise the English standard of students.