表示复数的s不是自由语素，必须附着于名词。

The plural 's' is not a free form, as it must always be attached to a noun.

《牛津词典》

在法语中，词语有阴阳性和单复数的变化。

In French, words are either masculine or feminine, singular or plural.

youdao

我不知道为什么，很多人会以为是有复数的。

I don't know why people think that "Revelations" is the name of the book.

youdao

codexes the plural of this is,is either codexes sometimes, codices I mean,Latin,you'd use the old Latinized plural,codices.

这个词的复数可以是，你可以用旧拉丁语复数。

耶鲁公开课 - 新约课程节选

So, Hesiod complains about them and calls them bribe swallowing basileis, crooked ones, plural; kings as in Homer.

因此,赫西奥德对他们进行控诉,称他们为"纳贿的巴赛勒斯们",复数形式的,就像荷马史诗中的"王者们"一样

耶鲁公开课 - 古希腊历史简介课程节选

God ruminates that the humans have become like "one of us" in the plural.

上帝说到人类会变成“我们当中的一个“，时，用的是复数。

耶鲁公开课 - 旧约导论课程节选