A propósito de su aumento de sueldo, quería pedirles que tuvieran un poco de paciencia.On the subject of your pay rise, I wanted to ask you to bear with me a bit.
Yo he venido en coche. - A propósito de coches, ¿te has comprado uno nuevo, verdad?I've come by car. - Speaking of cars, you've bought a new one, haven't you?