现在王燕是一所学校的九年级学生。

Now Wang Yan is a 9th grade student in a school.

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我是九年级学生。

I'm in the ninth grade.

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一项研究表明，九年级学生之间的友谊并不稳定。

One study showed that friendships among ninth graders were far from stable.

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I was smarter than the twelfth graders in ninth grade,

我九年级的时候就比十二年级的学生更聪明，

现在的孩子好可怕 - SpeakingMax英语口语达人