Not good at measuring 不熟悉计量单位

On my way to a picnic, I stopped at a fast-food place to order a quart of potato salad. “We don't sell it by the quart,” the clerk snapped. “Okay, then give me two pints, please,” I replied. She asked, “Do you want it in one container?”

在去野餐的路上，我到一家快餐店买一夸脱土豆色拉。售货员厉声说：“我们不按夸脱卖。”我说：“好吧，买两品脱。”她问：“装在一起吗?”(注：一夸脱等于两品脱)