Some early editions are simply not obtainable these days.

现今根本找不到一些早期的版本。

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Conclusion the detection of saliva specific antibodies could be used for the diagnosis of human trichinellosis when a serum sample was not obtainable.

结论检测唾液中特异性抗体对于诊断人体旋毛虫病有一定的应用价值，在采集血清有困难时可将唾液作为血清的替代检测标本。

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Firstly, it provides vital information about the way that people evolved—information not always easily obtainable from excavated artefacts alone.

首先，它提供了关于人类进化方式的重要信息——仅从出土文物中很难获得这些信息。

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He said the sum required by the college was "not obtainable" for most people.

BBC: Damien Shannon

"All" is mythical, not obtainable.

CNN: Men don't have it all either

The milk is not easily obtainable in the UK and judging by its full-on taste, we're not likely to be seeing Britain's bovine stocks replaced with these desert-loving creatures any time soon.

BBC: NEWS | UK | Magazine | Milk: One hump or two?