对二恶英进行化学量化分析需要非常先进的方法，世界上只有数量有限的几个实验室能够做到。

The quantitative chemical analysis of dioxins requires sophisticated methods that are available only in a limited number of laboratories around the world.

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卡内尔瓦的算法是一种将有限数量的数据点储存进非常巨大的潜在的内存空间的绝妙方法。

Kanerva's algorithm was an elegant method to store a finite number of data points in a very immense potential memory space.

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虽然现在就根据有限数量的健康青少年的研究结果下结论为时尚早，但是，我们希望这种鼓励对事件进行积极阐释的方法的有效性以后能得到证明。

Although these results are early, and among a limited number of healthy teenagers, we hope this approach to encourage positive interpretations of events will prove to be a powerful tool.

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