While the one-to-one model may work on a small scale, it is not sustainable.
虽然单对单模型可能在小规模下能够正常工作，但它是不可持续的。
A model car is a small-scale copy of a car, which represents its main features.
模型汽车是一种小型的汽车的副本，代表了其主要特征。
A model car is a small-scale copy of a car, which represents its main features.
模型汽车是一种小型的汽车的副本，代表了其主要特征。
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