grades have improved
成绩提高了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Mike"s and Molly"s grades have improved.
迈克和莫莉的成绩已有进步。
youdao
Mike's and Molly's grades have improved.
Since Ms.Ruto hooked up the system, her teenagers' grades have improved because they have light for studying.
自从露托小姐建起了这套装置，有了学习用的照明，她十多岁孩子的学习成绩提高了。
Both the grades and the rankings look at how students have improved academically.
WSJ: Teacher Rankings Opened to View
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