The overall result has been to make entrance to professional geological journals harder for amateurs, a result that has been reinforced by the widespread introduction of refereeing.

这样做的总体结果就是业余爱好者想在专业地质学期刊上发表文章就更难了，而评审制度的广泛采用又进一步加强了这一结果。

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Some "expert amateurs" in the satellite game could provide some inspiration for how to proceed responsibly.

卫星比赛中的一些“业余专家”可以为如何负责任地开展活动提供一些灵感。

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There's no room for amateurs in the hair-raising downhill for example.

VOA: standard.2010.01.22

"But I do think that in general we have seen a shift from, for lack of a better term, professionalized terrorist operations to those that are conducted by not exactly amateurs, but folks with less training and less capability generally, technical capability."

VOA: standard.2010.05.05

Be aware that this is not for amateurs, and that you results may vary.

FORBES: Market Volatility Can Help You. Honest!

But there's always room for Punorama, the punning contest for amateurs who admire the headline writers' art.

BBC: Amazing tales from Planet Tabloid

Or perhaps it wants HTML5 web apps to be the playground for amateurs, not the App Store.

FORBES: Will Apple Respond To Google With "HyperCard For iPhone" App Tool?