这些都是如假包换的汽车，他说。

"These vehicles are real," he says.

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他购买了一台包退包换的电视机。

He bought the television set on approval.

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大多数兰利居民都会多多少少参与投入「谜团周末」这个如假包换的社区活动。

Most Langley residents participate in some way in the Mystery Weekend, a true community event.

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The result is a cell that's very similar but it is - very similar to the progenitor cell but it's exactly the stem cell.

另一个结果就是产生一个,很像祖细胞的细胞,但却是如假包换的干细胞

耶鲁公开课 - 生物医学工程探索课程节选

They are RNA molecules but they have at some points in their life span, they have amino acids attached to them.

这些是如假包换的RNA分子,但在其生命周期的特定时间,它们会携带一个氨基酸分子

耶鲁公开课 - 生物医学工程探索课程节选