这些纸质手册的总费用——纸张、油墨、装订机、分拣机、封面，加上印刷、装订和分发的人工——差一点就300美元。
The total cost of the paper books--the paper, ink, binders, dividers, and covers, plus staff time to print, assemble, and distribute--was just under $300.
他还把印刷封面撕掉，所以很多盒子都成了无名盒子。
He has removed the printed covers, so the boxes are anonymous.
卡的封面是抱子甘蓝的图片。卡是用土豆淀粉纸做的，并用食用色素替代油墨上色印刷。
The card, with a picture of Brussels sprouts on the front, is made from potato starch paper and printed with food colouring instead of ink.
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