What is April Fools Day and what are its origins?

什么是愚人节？它的由来又是什么？ ？

youdao

The first of April is commonly known as April Fools' day, and it is customarily on this day to play a trick on a friend.

4月1日是大家都知道的“愚人节”。这一天可以拿朋友开心。

youdao

You may laugh at a prank on April Fools' Day.

你可能会因为愚人节的一个恶作剧而发笑。

youdao

Not to see if it was still April Fools Day, but to see if it was somehow still 2011.

FORBES: Move up http://i.forbesimg.com t Move down

And what better day to start than today, April Fools' Day?

WSJ: Why You Should Read What Your Broker Sends You

Every April Fools' Day, tech companies big and small roll out carefully constructed jokes.

CNN: Heather Kelly,