Today is April fools'day.

今天是愚人节啊！

youdao

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

专家称，愚人节的起源笼罩着神秘的面纱。

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

CNN: Heather Kelly,

Every April 1--yes, April Fools' Day--highly educated foreigners with corporate sponsors file for 65, 000 H-1B visas.

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Last year, the event was moved from its traditional Oscars-eve slot to April Fools' Day.

BBC: Kristen Stewart