to talk about a particular topic or issue
hablar sobre un tema o problema en particular (hablar sobre un tema o problema en particular)
"He will speak about effective communication at the seminar."
"Él hablará sobre la comunicación efectiva en el seminario." (El hablará sobre la comunicación efectiva en el seminario)
to spend time doing unimportant or fun things
to extend over a large area or among many people
to cause something to happen
to accept and deal with something difficult calmly
to support or defend someone as part of a group
to find the source of mistakes or problems