他撕去一个白色小杯的纸盖子，把奶油倒进他的咖啡。
He peeled the paper top off a little white tub and poured the cream into his coffee.
在 CBI 丹佛犯罪实验室，技术人员在一间无菌室里把这些物品抖出来，放到一个铺着纸的白色大平板上。
At the CBI Denver Crime Lab, technicians shake out the items in a sterile room, onto a large, white slab covered with paper.
纸又少又贵，所以他们通常把设计图案画在白色的桌面上。
Paper was scarce and expensive, so typically they drew the design onto a white tabletop.
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