愚人节正确书写：April fool's day 还是 April fools' day

愚人节正确书写：April fool's day 还是 April fools' day 愚人节 是April Fool's Day 还是April Fools' Day 愚人节的英语是April Fool's Day还是April Fools' Day还是April fools Day 愚人节的英语怎么说是April Fools' Day还是April Fool's Day 愚人节英语怎么说是April Fools' Day还是April Fool's Day 或者两个都可以 愚人节是译成April Fools'Day 还是April Fool's Day April fool's day 还是 April fools' day 到底是April Fool's Day 还是April Fools'Day? 为什么用April Fool's day而不是April Fools’ day? 请求翻译成英文愚人节也称万愚节,英文为April Fool's Day(纠正:April Fools' Day 是名词所 April Fool's Day 英语翻译April Fools' Day 愚人节 April Fools' Day is a day to play j