为什么用April Fool's day而不是April Fools’ day?

为什么用April Fool's day而不是April Fools’ day? April Fool's Day april fool's day That day was April Fool's Day April fool's day 还是 April fools' day根据 到底是April Fool's Day 还是April Fools'Day? 愚人节 是April Fool's Day 还是April Fools' Day April Fool's Day 的中文 April Fool`s Day is on the how about april fool's day On ,we have april Fool's Day April fool s day lm fool man 求翻译中文 愚人节的英语是April Fool's Day还是April Fools' Day还是April fools Day ApriL Fool Day Why are people tired on April Fool's Day?回答为什么 April Fool's Day is on April 1st 对on April 1st 提问 April Fool's Happy April Fool's