How to Localize:-
put the translated mo file as your_local(eg. en_US).mo in the bp-friends-suggestions/languages directory and It will show the localized strings.
How to use it In the theme(via php)
[sourcecode language="php"]
//display suggestions in unorderd list
$max=5;//how many suggestions at a time
bp_show_friend_suggestions_list($max);
[/sourcecode]