Martin告诉Lilly在餐馆里，账单的15%被认为是标准的小费金额。 Lilly又问，如果服务非常的差呢，还要给这么多吗？
Martin: In restaurants, fifteen percent of the bill is considered pretty standard.
它被广泛翻译为多种语言，但英语版规范是惟一标准的版本，就是说只有这个版本被认为具有标准的效力。
It has been widely translated, although the English version is the only normative one, meaning the only one that is intended to carry the force of standardization.
国际能源机构的数据被认为是排放和能源方面的黄金标准，在前景预期方面也被广泛认为是最保守的，这使得国际能源机构的警告更加明显。
The IEA's data is regarded as the gold standard in emissions and energy, and is widely regarded as one of the most conservative in outlook - making the warning all the more stark.
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