上课时你必须保持安静。
We must keep quiet in the library.
我们在图书馆里必须保持安静。
You must keep quiet in the library.
你在图书馆里应该保持安静。
我们必须保持安静。
You must keep quiet at school library.
你在学校图书馆必须保持安静。
We must keep quiet in the reading room.
在阅览室我们必须保持安静。
Every one must keep quiet when dancing.
跳舞时要保持安静。
你必须保持安静。
Those boys in the corner there must keep quiet.
那边角上的几个孩子必须保持安静。
You have a cold, so you must keep quiet at home.
你得了感冒，所以必须在家里静养。
We don't allow making noise here, so you must keep quiet.
我们不允许在这儿弄出噪音，请你保持安静。
The children are often asked not to speak loudly in the library. They must keep quiet.
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。
In order to guarantee all the members have a quiet practice environment, you must keep quiet in Venues. Close your phones before you come into the class.
为保证广大会员有一个宁静的习练环境，请勿在场馆内大声喧哗，进入教室前请主动关闭手机；
You must keep them quiet, and see that they behave well and do not waste their food.
你要让他们保持安静，让他们守规矩，不要浪费粮食。
Keep quiet! The baby is sleeping. We must keep our classroom clean.
那婴儿正在睡觉，保持安静！我们必须保持我们的教室干净。
"Quiet down a bit, fellows. Order. We must keep order! " one of the deputies shouted.
同学们，安静点，秩序，我们要保持秩序。
Human life is. but like a froward child, that must be played with andhumored a little to keep it quiet till it falls asleep(William Temple.
人类的生活…象一个固执的孩子，一定要陪着他玩且迁就他以保持安静直到他进入梦乡（威廉·坦普尔）。
We must not and cannot keep quiet.
我们绝不能，不能保持沉默。
We must not and cannot keep quiet.
我们绝不能，不能保持沉默。
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