The past offers all sorts of unsavoury stories of behaviour brought into the realm of medicine with dire effects.

某种行为被带入医学领域并导致极为严重的后果，这类声名狼藉的故事在历史上数不胜数。

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That climate change has not yet done very much harm may be cheering, but the past offers no firm guarantees for the future.

气候和变化迄今为止还没有造成非常大的损害，这也许是件令人高兴的事，但是过去并不对未来提供可靠的保证。

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The Palestinians have rebuffed Netanyahu's past offers for such meetings, saying his hardline position on all core issues makes dialogue impossible.

巴勒斯坦方面过去一向拒绝内塔尼亚胡有关举行这类会面的提议，理由是他在所有核心问题上所持的强硬立场，使任何对话都变得不可能。

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They reported fewer orders and fewer offers to teach classes over the past year.

VOA: special.2009.05.18

No one knows what the future holds for Afghans, but the past offers little optimism.

FORBES: Endangered Wartime Interpreters: The U.S. Should Protect Those Who Protect Us

That climate change has not yet done very much harm may be cheering, but the past offers no firm guarantees for the future.

ECONOMIST: Climate change and crops

Beyond the symbolism, Estonia's economic experience in the past decade offers some lessons for troubled euro-area countries.

ECONOMIST: Charlemagne