what would it mean to read this letter out loud in a community, not alone in your dorm room,or just by yourself,in the library?

为什么书信要在人群中大声朗读，而不是在寝室里，图书馆里一人看？

耶鲁公开课 - 新约课程节选

I usually stay in my room. I live in East Campus, that dormitory.

我经常待在寝室。我住在东部校区那边的宿舍。

因为体育而亲近 - SpeakingMax英语口语达人

If you knew your way around in the funhouse like your own bedroom, you could wait until a girl came along and then slip away without ever getting caught, even if her boyfriend was right with her.

如果你在开心馆中跟自己在寝室里一样熟悉门道，你可以等一个姑娘前来，事后溜之大吉,绝不会被人抓住，即使她男朋友就在旁边。

耶鲁公开课 - 1945年后的美国小说课程节选

If you're at home, you'll do it with your family, now you're in university, where do I do it, who do I go and eat with, I might be by myself at my dorm room.

如果你在家里，你会和你的家人一起，而现在你在学校里，就不知道在哪里，和谁一起去吃这顿晚餐，也许就自己一人在寝室。

普林斯顿公开课 - 人性课程节选