It is limited to only processed protein and carbohydrates, which are easily replaceable with a well-balanced, healthy diet.

实际上，这份食谱只是处理饮食中蛋白质和碳水化合物的关系，而这两种物质可以由平衡健康的饮食来取代。

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A relation holding between elements replaceable with each other at a particular place in a structure, or between one element present and the others absent.

指在结构的某个特殊位置上彼此可以相互替换的成分之间的关系，或者说是在现场的成分与不在现场的成分之间的关系。

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"The modular steel furniture has cushions covered with a new generation of vinyl that is sanitary, breathable, and replaceable," she said.

“组合式钢家具表面附有新一代乙烯减震垫，干净、透气、易更换”，她介绍说。

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Regardless of the model, some key features remain the same: both have 15.6-inch (1, 366 x 768) displays, replaceable batteries and numpads, along with trackpads that support Windows 8 gestures (that's true of most new laptops, actually).

ENGADGET

Business leaders who adopt the attitude that anyone is replaceable, thinking they can simply hire someone with a greater skillset or someone with a more prestigious pedigree, are fooling themselves.

FORBES: Great Employees Are Not Replaceable

The latest victim happens to be Google's recently announced Nexus 7, which has achieved a "repairability score" of 7 out of 10 (the Kindle Fire squeaked one notch past with an 8), with many accessible components including a replaceable battery and standard Phillips screws.

ENGADGET: Google's Nexus 7 tablet hits the iFixit teardown labs