他对他们礼物的感激之情，以前总是刺痛他们的良心——这次比以往任何时候都要深。

His gratitude for their gifts had always smote their consciences before—it cut deeper than ever, this time.

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因此，在2001年以前全球增长速度不大可能恢复到以往的水平。

Thus, global growth rates are unlikely to return to historical trends before 2001.

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有人说，“以往，他们经常谈到富裕国(在2020年以前)削减碳排放量25%至40%。”

"In the past they used to refer to rich countries cutting their emissions by between 25% and 40% [by 2020]," said one.

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