Neatly placed in the center of each case is a piece of trash, be it a tinfoil snack wrapper, a small piece of toilet paper, or cake packaging.

《垃圾》是几张小小的透明光盘盒组成的一个装置系列，透明的光盘盒中，整齐地放着旧的锡箔食品包装纸，和打着字的蛋糕垫纸、小片的卫生纸。

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"Piece of cake" is another expression that means something is extremely easy to do. A friend might tell you that his new job was a "piece of cake. "

太容易是说极事情容易办得到的又一说法，一朋友告诉你他的新工作是太容易。

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

VOA: special.2010.04.12

A friend might tell you that his new job was a "piece of cake."

VOA: special.2010.08.29

Unless it is a "piece of cake."

VOA: special.2009.06.07

Just a bit of runway crosswind, a piece of cake for the Cirrus.

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Downloading a pirated movie is a piece of cake for even a neophyte, as Bruce Forest of Viant, a digital consultancy, demonstrated at a Red Herring Hollywood conference in August.

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By comparison, working out the likelihood that a 45-year-old smoker will have a heart attack in the next 12 months is a piece of cake.

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