They may be merely additions to existing product lines (the first cigarette with a filter tip, for instance) or improvements to existing products (a new whiter-than-white washing powder).

它们也可能仅仅是在现有的产品上增加了一些东西(比如推出带有过滤嘴的香烟)，或者是对现有的产品做出改良(比如一种能把衣服洗的更白的洗衣粉)。

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While some tech companies are developing more energy-efficient product lines, others are releasing software to make existing computers consume less.

一些科技公司开发了更节能的产品，还有一些公司推出了减少现有电脑耗电量的软件。

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Typically, taxonomists look at existing databases, Web sites, organizational charts, product lines, other legacy databases, term lists, and product documentation to tease out existing categories.

通常情况下，分类法专家会研究现有的数据库、Web站点、组织图表、产品线、其他遗留数据库、词汇列表和产品文档，从而了解现有的分类。

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They discovered innovations were handed off to traditional market category teams and included in existing product lines.

FORBES: Realizing Innovation's Full Value

If the Mac maker intends to move in this direction, investors must wonder when the existing product lines will be terminated.

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