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。
I have not experimented with words having irregular plurals; words like datum and data might trip up Rails.
通常未发布的一套已成惯例的规则或作法，意在尽量减少混乱或冲突。通常用于复数。
A set of established rules or practices, usually unstated, intended to minimize confusion or conflict. Often used in the plural.
其中很多词，特别是常用词，现在只有合乎英语规则的复数形式。
Many, especially those in general use, now only have a regular English plural form.
名词词组复数变化的规则就是：变“重点词”。
写出以下不规则名词的复数形式。
明确性规则：通常未发布的一套已成惯例的规则或作法，意在尽量减少混乱或冲突。通常用于复数。
A set of established rules or practices, usually unstated, intended to minimize confusion or conflict. Often used in the plural.
规则的简化与统一是一种涉及名词复数的特殊形式的自然的形态规则变化。
Rule simplification and regularization:Rule simplification and regularization are a type of spontaneous morphological rule change that involves exceptional plural forms of nouns.
其中很多词，特别是常用词，现在只有合乎英语规则的复数形式。
Criterion, criteria. i2bMany, especially those in general use, now only have a regular English plural form.
根据复数的读音将以下规则的名词复数填入表内。
根据复数的读音将以下规则的名词复数填入表内。
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