English Dictionary

sign in

verb

(idiomatic) To sign one's name on a list when entering a place, to indicate one's arrival. / (computing) To take some action to access a secured program or web page on a computer; to log in.

Please sign in before entering the building.

意味（1）

(idiomatic) To sign one's name on a list when entering a place, to indicate one's arrival.

In order to get into the office after hours, you'll have to sign in at the security desk.

意味（2）

(computing) To take some action to access a secured program or web page on a computer; to log in.