To make things worse, I managed to fall right in front of four girls from the ninth grade.

更糟糕的是，我竟然当着四个九年级女生的面摔倒了。

You are the ninth-grade students, the winter would like to take a good rest, and do the things you like.

你是九年级的中学生，本想趁寒假好好休息，做点自己喜欢的事。

Then, in eighth or ninth grade, I studied astronomy, cosmology, and the origins of the universe.

后来，在八、九年级的时候，我在学习天文学，宇宙学和宇宙的起源。

They spend suppertime summarizing the story they read in ninth-grade English that day, or explaining how Newton's laws of motion work.

他们用晚餐时间总结在当天九年级英文课里读到的故事，或者解释牛顿的万有引力定律。

In ninth grade, your idea of a good friend was the person who would go to a party thrown by a senior so you wouldn't wind up being the only freshman there.

在九年级时，你心目中的好朋友会和你同赴高年级学生举办的聚会，这样你就不会因为是那里唯一的新生而感到拘束。

In ninth grade, he wrote a report on the history of Disney Studios, and he decided then how he wished to spend his life.

九年级时，读完记述迪士尼工作室历史的《动画的艺术》后，他写了一份读书报告，那时的他就明白了自己想要怎样度过一生。

When I was 14 years old in the ninth grade we had a new boy at our school.

当我14岁的时候，我上初三，我住在夏威夷，我们学校里有一位新来的男同学，他叫杰森。

It's the singles' day which the ninth grade had its winter trek once again.

光棍节的今天，是附中又一次冬游的日子。