安静！你不能在图书馆里说话。
Be quiet! You mustn't talk in the library.
自然公园真安静！
The nature park is so quiet!
好了，孩子们，安静！
All right, boys and girls, quiet now!
simple example站着别动，安静！
Stand still and be quiet!
simple example去图书馆看书，嘘…安静！
Go to the library. Read a book. Shhh… Be quiet.
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