Upper envelope model is derived from the characteristics of our price index. This paper is of extensive practical value.

并根据我国物价指数变化的特点，进一步建立了上包络线模型．使本文更具实际意义。

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Upper East Siders for a new generation, the girls of 'Gossip' always push the fashion envelope... and yes, it's sometimes a little too far.

上东区的年轻人，绯闻女孩们引领潮流。虽然有时候潮过了头。

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Affix the stamp to the upper right corner of the envelope.

把邮票贴在信封上的右上角。

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