off the shelf

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释义
(商品等)现成的；无需定制的
As purchased or as commonly available, without modification or customization.

例句
Sheldon: Mountain elf.
Raj: He takes the elf from off the shelf.(The Big Band Theory)
谢尔顿：高山精灵。
拉什：他的精灵都是现成的。（生活大爆炸）