How to say in Czech: We have known them for a long time.

English
have known for a long time.
Czech
My je známe už dlouho.
It happened a long time ago.
Long time no see.
How long have we been here?
How long have we been living here?
We don’t want to wait that long.
We do not know them.
We know them well.
We would like to get to know them better.
Where do we know them from?
She has a long face.

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