New Revised Standard Version
He said to me, “Do you not know what these are?” I said, “No, my lord.”

Contemporary English Version
"Don't you know?" he asked. "No sir, I don't," was my answer.

New American Bible
He said to me, “Do you not know what these are?” I answered, “No, my lord.”

Douay-Rheims Bible
And he spoke to me, saying: Knowest thou not what these are? And I said: No, my lord.

And he spoke to me, saying: Knowest thou not what these are? And I said: No, my lord.

Knowest.

Zechariah 4:5 And the angel that spoke in me answered, and said to me: Knowest thou not what these things are? And I said: No, my lord.

Hebrews 5:11,12 Of whom we have much to say and hard to be intelligibly uttered: because you are become weak to hear. . . .