"mapurtaHvIS, rajma'Du'maj DIlo''a'? ghobe'. taghDu'maj DIlo'."
Translation:While we inhale, do we use our kidneys? No. We use our lungs.
This is a case where the English pretty much has to be "while," not "when," to match what the Klingon says. But really, the Klingon should use -DI' instead of -vIS. "When" here implies only "as soon as we inhale," since inhaling continuously is not something the question is interested in.