unscramble
verb [ T ] uk/ʌnˈskræm.bəl/ us/ʌnˈskræm.bəl/
将（信息）还原;对…进行解码
to discover the meaning of information given in a secret or complicated way
You need a decoding device to unscramble some of the signals sent out by satellite and cable TV. 你需要一个解码器来复原由卫星和有线电视发出的某些信号。
Synonym: decode