let in

US /lɛt ɪn/
UK /lɛt ɪn/
"let in" picture
1.

讓...進來, 允許進入

to allow someone or something to enter a place

:
Could you please let the cat in?
你能把貓放進來嗎?
The bouncer wouldn't let him in because he was underage.
因為他未成年,保全不讓他進去
2.

透露, 洩露

to reveal a secret or allow someone to know something private

:
She accidentally let in on her plans for the surprise party.
她不小心透露了她的驚喜派對計畫。
Don't let anyone in on our secret.
不要任何人知道我們的秘密。