How To Use Unreplaceable In A Sentence

• Metaphor plays an unreplaceable role in the development of vocabulary. It causes the change of prototype meaning, the expansion of semantics, and the development of category.
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• Synthetic subject design of the mechanic design is an important and unreplaceable practical phase in the cultivation of students ability in design and innovation.
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• No one seemed to worry that they were demolishing unreplaceable objects, ruining things that were best left untouched.
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