你在学校图书馆必须保持安静。
我们必须保持安静。
看电影的时候，你必须保持安静。
在图书馆你(1)必须保持安静。
那边角上的几个孩子必须保持安静。
当你在图书馆时，你必须保持安静。
当你在图书馆时，你必须保持安静。
我们在图书馆里必须保持安静。
在阅览室我们必须保持安静。
好的我们必须保持安静好不？
在图书馆我们必须保持安静。
上课时你必须保持安静。
参赛者在指定的比赛区域中必须保持安静。
Competitors must remain quiet when inside the designated competition area.
这儿有许多病人，所以我们必须保持安静。
这个意味着什么？它意味着我们必须保持安静。
你必须保持安静。
在整个测试过程中你必须保持安静并且视而不见。
孩子们经常被告知不要在图书馆大声说话。他们必须保持安静。
The children are often asked not to speak loudly in the library. They must keep quiet.
但是因为我还在后台，我必须保持安静，所以我只能偷偷地乐着。
But I had to keep it bottled up because I couldn't tell anyone, and I was backstage at a show so I had to be quiet.
为了允许感受过程能够浮现，有时候我们必须保持安静，最起码在较短的一段时间内。
In order to permit the feeling process to arise, we must sometimes remain silent, at least for some brief periods.
教室内必须保持安静，不大声喧哗，不得在教室内做学习以外的事，例如：打牌，玩电子游戏。
Students should keep quiet without excessive noise in classrooms. There they are allowed to study rather than play cards, computer games or engage themselves in other activities irrelevant to study.
首先，我们必须学会保持安静平和，定居在一个地方一段时间。
First, we must learn to be quiet, to settle down in one spot for a spell.
你们必须做什么？---我们必须在图书馆里保持安静。
What do you have to? --- We have to be quiet in the library.
你看，我说出口了。你必须知道，请保持安静。
There! I said it, and you need to know that…be quiet, please.
在初始训练结束后，受试者们或可以小睡90分钟或从事其他很安静的活动，但必须保持清醒。
Following this initial training, participants were assigned to either take a 90-minute nap or to engage in quiet activities but remain awake.
球内铃铛的声音会告诉运动员球的位置，因此场下观众在观看比赛时必须保持绝对的安静。
Bells inside the ball tell the players where the ball is, and because of this, spectators must be completely quiet when watching a game.
那婴儿正在睡觉，保持安静！我们必须保持我们的教室干净。
Keep quiet! The baby is sleeping. We must keep our classroom clean.
我们必须在课堂上保持安静。
我们必须在课堂上保持安静。
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