The proper text for refers to a specific custom recovery file, likely for a Chinese-market smartphone (often Xiaomi or Redmi devices) .
: Often stands for "DingXian" (a well-known developer/compiler of TWRP builds in the Chinese community).
: Team Win Recovery Project, the custom recovery software. 3.3.1 : The version of TWRP. 0108 : The release date (likely January 8th).
: This usually implies the file is a toolkit meant to be run from a PC (via Fastboot) to install the recovery, rather than a standalone image file to be flashed within Android.
: A compressed archive containing the installer and the recovery image.
