Plurals were hard, too.

名词的单复数也很难。

Write in the irregular plurals of these nouns.

写出以下不规则名词的复数形式。

A. Plurals: Write the plurals of these words in the correct columns below.

将加粗中名词的复数形式填入正确的栏目中。

I have not experimented with words having irregular plurals; words like datum and data might trip up Rails.

我没有使用不规则复数单词的经验；datum 和 data 等单词可能会令 Rails 出现问题。

Nouns that are not plural in native-speaker English are used as plurals by non-native speakers (" informations ", "knowledges", "advices").

非英语母语人士将英语母语人士视为没有复数形式的名词以复数形式使用(“informations”，“knowledges”，“advices”)。