n.笨蛋;假貨;小攤販
He is a duffer at golf. 他不善于打高爾夫球。
I am always a bit of a duffer at maths. 我在數(shù)學(xué)方面總是有點笨。
My dad is a real old duffer with such out-dated ideas, but I love him anyway. 我老爸可真是個老笨蛋,有這么過時的想法,不過不管怎樣我都愛他。