unzip
verb [ T ] uk/ʌnˈzɪp/ us/ʌnˈzɪp/ -pp-
拉开…的拉锁
to open something by using a zip
He unzipped his suitcase. 他拉开了手提箱的拉锁。
将（计算机压缩文件）解压缩
to return a computer file to its original size after it has been zipped (= reduced in size so that it can be easily sent or stored)