专家称，愚人节的起源笼罩着神秘的面纱。

The origins of April Fools'Day are shrouded in mystery, experts say.

youdao

起源：四月愚人节的确切起源已不可考，不过很多人认为这个节日是起源于1582年前后的法国，在公历被引进之后——公历就是我们到今天还在使用的历法。

Origin: the exact origin of April Fool's day isn't known, but many think it began in France around 1582 with the introduction of the Gregorian calendar, which is the most widely used calendar today.

youdao

所以后人认为，在这一天去做一种毫无意义的事，就好像一只白鸽做了白工一样，行为愚蠢，为为“愚人节”之起源。

So later that in this day to do a meaningless things, like a dove made of white workers as stupid behavior, is the origin of "April Fool" is.

youdao