只有当一个新的观察，比如“那个球是蓝色的”，与已有的陈述之间产生矛盾时，才会出现问题。

Problems occur only if a contradiction develops between a new observation, say, "That ball is blue", and the preexisting statements.

youdao

还记得《灵丹妙药》里的观察性和陈述性DHV吗？

Remember Observed and Told DHVs from Magic Bullets?

youdao

“这是我们第一次可以获得大型年轻星体周围的碟状区域内部的图像，”Kraus陈述说，“我们的观察表明所有星体的形成方式都是一样的，无论大小。”

This is the first time we could image the inner regions of the disc around a massive young star, "Kraus said in a statement."

youdao