The next set of plurals we use in English, but  don't follow the conventional English formula, are plurals we've pilfered from Latin and Greek.

我们在英语中使用的下一组复数，但不遵循传统的英语公式，是我们从拉丁语和希腊语中窃取的复数。

Mary, through her agitation, was aware that they were both designating the unknown visitor by a vague pronoun, instead of the conventional formula which, till then, had kept their allusions within the bounds of custom.

玛丽，通过她的激动， 意识到他们都在用一个模糊的代词来指代这位陌生的来访者， 而不是传统的公式， 直到那时，他们的典故一直保持在习俗的范围内。