在图书馆务请保持安静。
You must be quiet in the library.
不得在图书馆内喧哗。
在图书馆里保持安静。
You are expected to be quiet in the library.
在图书馆你应该保持安静。
What do you have to? --- We have to be quiet in the library.
你们必须做什么？---我们必须在图书馆里保持安静。
Please be quiet in the Library. Mobile phones and other electronic devices must be on silent mode when in the reading rooms.
请保持馆区安静，入室请将移动通讯设备置于静音状态；
My personal favorite is a reading chair in the corner of my office, I like the feeling of being in a big library surrounded by books, and everyone knows that you need to be quiet in the library!
我个人最喜欢办公室一角的阅读专用椅，喜欢身在一大图书馆被书籍包围的感觉，而且大家都知道图书馆需要安静。
In the quiet library and classroom, silence reigns, though there might be a lot of people around you.
在安静的图书馆和教室里，四周有许多人，但是鸦鹊无声。
In the quiet library and classroom, silence reigns, though there might be a lot of people around you.
在安静的图书馆和教室里，四周有许多人，但是鸦鹊无声。
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