Children are hard at work in the study hall.

孩子们在自习室里刻苦学习。

She'd go to the library during ninth period, when she had study hall.

第九节课是自习时间，她会去图书馆学习。

You going to study hall later?

你能会儿去学习室？

The school is organizing a study hall.

学校正计划成立辅导室。

Do you two know what we do in study hall?

你们两个知道学习室是干什么的吗？