he paused for a long time or between speech, maybe he is trying to THINK what hes going to say lest made a mistake..(hey hey hey youngsters out there..... think before u speak, dont bombard our mental............. oh...mentor. i mean those have NOT voted before!)
or maybe.................. hard to put to words...... our mental.........opps...... mentor xperiencing a 'menopause' geng nia qi......