本文给出了2—PM空间的可度量化条件及度量函数、伪度量函数，从而把PM空间上的有关结论推广到2—PM空间上。

This paper gives the metrizable conditions of 2-probabilistic metric space (2-pm space), its distance function and pseudo distance function, thus extends some conclusions of PM-space to 2-pm space.

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因为所涉及的条件不断变化，所以农业很难量化。

Agriculture proves very difficult to quantify because of the constantly changing conditions involved.

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Devine希望能通过将营养量化来达到影响工作条件限制的目的，它最终会提示雇主们需要改变一下工作场所。

Devine hopes that by quantifying the nutritional impact of on-the-job constraints, it might finally prompt employers to make some workplace changes.

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