을 감을

… close (one’s eyes)

→ 을
phrase Rare #17,084
… close (one’s eyes) 을 marks the object of 감다, which commonly means “to close” when used with 눈 (eyes). 감다 can also mean “to wind” or “to wrap” something.
KO: 눈을 감을 때 깊게 숨을 쉬세요.
EN: Take a deep breath when you close your eyes.