How to say in Czech: He doesn’t know what they mean by that.

English
doesn’t know what mean by that.
Czech
On neví, co tím chtějí říct.
He doesn’t know what to do anymore.
He just doesn’t know what to say.
He doesn’t know.
He doesn’t know if he has the time.
He doesn’t need that.
He doesn’t want to wait that long.
He doesn’t have a lot of work.
He doesn’t like people touching him.
He doesn’t like writing.
He doesn’t want to go alone.

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