No lo sabía, pero ha cambiado la reglamentación de la empresa y ahora tenemos solo media hora para comer.I didn't know about it, but the company's regulations have changed, and now we only have half an hour for lunch.
Cuando le pregunté a la secretaria dónde iba a tener lugar la conferencia, me dijo que no lo sabía.When I asked the secretary where the conference was going to be held, she told me that she didn't know.
Su socio había estado utilizando la empresa para blanquear dinero, pero él en el juicio aseguró que no lo sabía.His partner had been using the firm to launder money, but in the trial he maintained that he didn't know about it.
Usted se excusa diciendo que no lo sabía, pero es su obligación mantenerse informado.You've apologized saying that you didn't know, but it's your obligation to keep yourself informed.