But while the tree rings show variability, there is no data for why these climate changes occurred.

尽管树木年轮表明当时发生了气候剧变，却没有任何数据解释这次剧变的原因。

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The problem, say some industry veterans, is that so much consumer data is now up for sale, and there are no legal limits on how that data can be used.

据一些行业资深人士所言，问题在于：现在有如此多的用户数据拿来出售，却没有在法律上限定这些数据该怎样使用。

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There is no caching involved for either data or metadata.

数据或原数据都不会涉及缓存的问题。

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The good news is, there is no shortage of data for this purpose.

FORBES: Data, Data Everywhere!

"There are no plans to make manufacturers share the information, because there is no standardised system for recording the data, " said a spokesman for the Department of the Environment Transport and the Regions.

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The key is that without the work of the initial model there is no need demonstrated for better data or how it could demonstrably improve the model.

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