take note of
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take note of (something)
To make an especial effort to focus on or remember something. Sorry, I was taking note of the details in this ancient tower's architecture and wasn't listening to what you said. Jenny, take note of this number and remind me to call it when we get home.
take note of someone or something
Fig. to notice someone or something; to commit something about someone or something to one's memory, possibly by making a note on paper. I took note of her when she came in. I thought she had left the company. Please take note of the hour. It is late.