Browsing Chinese (Simplified) translation

38.

If the TEXTDOMAIN parameter is not given, the domain is determined from the
environment variable TEXTDOMAIN. If the message catalog is not found in the
regular directory, another location can be specified with the environment
variable TEXTDOMAINDIR.
When used with the -s option the program behaves like the 'echo' command.
But it does not simply copy its arguments to stdout. Instead those messages
found in the selected catalog are translated.
Standard search directory: %s