shell - How can I prepend a default value to all echo calls in a bash script -

i have bash script containing multiple echo calls:

 #!bin/bash  echo 'a'  echo 'b'  echo 'c' 

i want prepend default text of these echo calls output this:

default_text: default_text: b default_text: c 

is there way globally inside script without adding default text each 1 of echo calls?

note: below there 2 answers question. 1 accepted resolves problem echo commands. second 1 resolves problem globally inside script any command outputs stdout.

define function:

function echo {     builtin echo 'default_text: ' "$@" ; } 

the builtin needed, otherwise function recursive.