to buy and sell a particular product or type of goods
comprar y vender un producto o tipo de bienes en particular (comprar y vender un producto o tipo de bienes en particular)
"He deals in antique furniture."
"Él se dedica a la venta de muebles antiguos." (él se dedica a la venta de muebles antiguos)
to pay attention without judgment or interruption
to continue making progress despite challenges
to phone in advance to make arrangements
to release or stop holding onto negative emotions like fear...
to focus your attention fully on something important
to experience problems or difficulties