It was noted, in particular, that the language of the exclusion was drawn from article 2, subparagraph (a), of the United Nations Sales Convention, since it was language that had been tested in practice and had proved to be workable.
工作组还特别注意到，这项不适用情形的措辞取自《联合国销售公约》第2条(a)项，因为这是经过实践检验并被证明行之有效的措辞。