I've been tracking Amazon prices since then, however, and haven't identified a distinct trend.
自那以后,我持续追踪了亚马逊上各类产品的价格,不过目前为止还没有发现明显的降价趋势。
Since the late 1990s, data federation has emerged as a distinct approach from the centralized approach that data marts and warehouses had been using.
自 20 世纪 90 年代后期,数据联合已经作为与集中方法截然不同的一种方法而出现了。 在分散方法中,使用了数据市场(mart)和仓库。
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