sign in
短语签到, 签收 [计] 注册
发音
AU
词形变化
signs in
三单
signing in
现在分词
signed in
过去式
signed in
过去分词
释义与例句
v.
-
1.
To sign one's name on a list when entering a place, to indicate one's arrival.
习语In order to get into the office after hours, you'll have to sign in at the security desk.
-
2.
To take some action to access a secured program or web page on a computer; to log in.
计算机 工程 数学