| 单词 | sign sb↔in/out |
| 释义 | ● ˌsign ˈin /ˈout ● ˌsign sb↔ˈin /ˈout to write your /sb's name when you arrive at or leave an office , a club , etc .签到/签退；替某人签到/签退◆ All visitors must sign in on arrival . 来客均须签到。◆ You must sign guests out when they leave the club . 客人离开俱乐部时，你必须为他们签退。See also sign |
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