1·Advanced search has the added benefit of matching different word forms, such as plurals, alternate verb endings, and various grammatical tenses, in the search results.
高级搜索的另一个好处就是可以在搜索结果中匹配不同单词形式，比如复数、不同的动词结尾和各种语法时态。
2·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。