sign out
— phrasal verb with sign uk/saɪn/usverb
to sign your name in a book when you leave an office, hotel, etc. to show that you have left and are no longer in the building:
He signed out of the hotel.
英语词典包含110679条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。