Here's a piece of cake and a small coffee for you, sir.

先生，这是给您的一块蛋糕和一小杯咖啡。

youdao

youdao

youdao

"People can eat a cupcake and not feel like they're eating a whole piece of cake.

VOA: special.2010.04.12

Trivial, smart animal, piece of cake.

对于这么聪明的动物，这易于反掌。

耶鲁公开课 - 心理学导论课程节选

"Piece of cake" is another expression that means something is extremely easy to do.

VOA: special.2009.06.07

They would bring me a piece of cake and solemnly watch me eat it.

NEWYORKER: Wakefield

Handling three percent fewer flights with better equipment should be a piece of cake.

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Even so, flying the little Eclipse at nearly 400mph was a piece of cake.

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