老哥们教教我，不会
“We compared the grades of students who work a great deal with those who work in limited amounts or not at all ”解释一下两个who引导的从句如何在句子中表达意思和用法
2①There are numerous and reliable ways by which one can measure the impact of employment on student achievement……的by which的用法——课本第一句
3②"A heavy commitment to a part-time job during the academic year, say, working 20 hours per week or more，”
How to translate "say" in this sentence in the second paragraph of this passage?
“We compared the grades of students who work a great deal with those who work in limited amounts or not at all ”解释一下两个who引导的从句如何在句子中表达意思和用法
2①There are numerous and reliable ways by which one can measure the impact of employment on student achievement……的by which的用法——课本第一句
3②"A heavy commitment to a part-time job during the academic year, say, working 20 hours per week or more，”
How to translate "say" in this sentence in the second paragraph of this passage?
