Let's put a pin in it.

"Put a pin in it" is an idiomatic expression that means to temporarily stop discussing or dealing with something and revisit it later. It's like saying, "Let's pause this for now and come back to it when the time is right."

Example:
"We can put a pin in this discussion for now and pick it up tomorrow."
뜻: "지금 이 이야기는 잠시 멈추고 내일 다시 하자."