The use of lead dioxide in electrolytic systems , particularly for thermodynamic measurements , has indicated that irreproducible results are often obtained , and this imposes stringent purity requirements on the materials involved .

二氧化铅在电解体系，特别是需要进行热动力学测量的体系中的应用已经表明，所得的结果是有重现性的，这就对所涉及的材料的纯度提出了严格的要求。

Such an image is so inexplicable and irreproducible that all the heart can do is ache with gratitude , and all the young man can know is that he will live forever , love all the women , drink all the wine , make all the movies and become fellini .

这样的画面如此费解、不可复制，使心灵感激到作痛，令年轻的男人明白：他会永远地活着、爱所有的女人，尝遍所有的酒，拍各种各样的电影，成为另一个费里尼。