假设你是一名在美国读大学的学生，你对学校的住宿条件不满意。请写一封正式的投诉信：
Dear Sir or Madam,
I am writing to complain about the accommodation of the University.
There are some problems in living conditions, which are very unsatisfactory.
First of all, I think it's too early to turn off the lights at 10 every night.
Secondly, hot water supply is only available for a certain period of time, which is very inconvenient to my daily life.
Third, the dormitory has no internet access.
So when I need to do research for my study project, I have to go to the library.
These problems have brought trouble to my study and life.
Therefore, I have some suggestions: turn on the light for another hour, provide 24-hour hot water supply, and install Internet access in the dormitory.
I sincerely hope you will consider my suggestion and look forward to your reply.
Yours，
xxx
尊敬的先生或女士：，
我写信是为了投诉大学的住宿情况。
生活条件有些问题，很不令人满意。
首先，我觉得现在每晚10点关灯还为时过早。
其次，热水供应只有一段时间，这对我的日常生活很不方便。
第三，宿舍没有互联网接入。
所以当我需要为我的研究项目做研究的时候，我必须去图书馆。
这些问题给我的学习和生活带来了麻烦。
因此，我有一些建议：再开灯一小时，提供24小时热水供应，在宿舍安装互联网接入。
我真诚地希望你能考虑我的建议并期待你的答复。
谨上/敬启
xxx
重点词汇：
complain about ：抱怨，投诉。
living conditions： 生活条件。
First of all ：第一;首先。
every night ：夜夜。
available for ：可供…之用的，有效期为，能参加…的。
period of time： 一段时间 ; 时段 ; 一个时期。
daily life ：日常生活。
以上内容参考 百度百科-翻译