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相对于普通车而言,混合动力车对环境有利一些。但它们却对盲人的安全造成了威胁。因为这种车发出的声音很小,盲人过马路时就听不到车
Compared to ordinary cars, hybrids are good for the environment. But they pose a threat to the safety of the blind. Because the car makes a very small noise, the blind can not hear the car when crossing the street