to talk about a particular topic or issue
говорить о конкретной теме или вопросе (govorit' o konkretnoj teme ili voprose)
"He will speak about effective communication at the seminar."
"Он будет говорить о эффективной коммуникации на семинаре." (On budet govorit' o effektivnoj kommunikacii na seminare.)
to continue talking for a long time, often unnecessarily
to search carefully to discover true information
to defend or support yourself or someone else confidently
to give information or a message to someone else
to enjoy something greatly, especially praise or attention
to avoid mentioning unpleasant details