Don't sleep is one of the common slogans in libraries, which can be expressed in the following ways:

1, please don't sleep in the library, so as not to affect other readers.

2. The library is a place to study, so it is inappropriate to doze off.

Please keep quiet and don't doze off in the library so as not to affect others.

Don't doze off in the library, stay focused and alert, and make better use of study time.

The library is a place to study. Please don't take a nap here, let reading and learning become an efficient and enjoyable process.

6. Reading is a pleasure, but please don't doze off in the library to avoid disturbing others and wasting time.

7. Don't take a nap in the library, stay alert and focused, and better explore and discover the unknown world.