to talk about a particular topic or issue
parler d'un sujet ou d'une question particulière (parler d'un sujet ou d'une question particulière)
"He will speak about effective communication at the seminar."
"Il parlera de la communication efficace lors du séminaire." (il parlera de la communication efficace lors du séminaire.)
to unite or collaborate with others for a common purpose
to buy and sell a particular product or type of goods
to agree with or be suitable for something
to start working smoothly after some time or preparation
to rely on selling goods to other countries
to cut something into small pieces quickly