a thing or two

مثال؛
I'm having trouble paying attention - I have a thing or two on my mind.
Why don't you ask Andrew about it? He knows a thing or two about ( = has some knowledge of ) computers.
She thinks she knows everything about raising children, but I could tell her a thing or two ( = some information she does not know ) .
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بعضی معلومات/حقیقت ها/موضوع‎ها

کلی مطلب، اطلاعاتِ بسیار، بسیار زیاد، کاملا آشنا بودن با چیزی

Informal
خیلی سرش شدن
Means one knows a lot about something from their own experiencees and are good at it
Shakespeare knew a thing or two
. about science

اطلاعات جامعی از چیزی داشتن

Know/ teach A thing or two:
( خودمونی ) یه سری چیزا دوستن/ یاد دادن
Collins:👇👇👇
�If you say that a person knows�a thing or two�about something or could teach someone�a thing or twoabout it, you mean that they know a lot about it or are good at it.
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