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Expression
提速tí sù
raise speed, lift speed
自20世纪90年代以来,中国铁路经历了六次大提速,大幅度提高了旅客列车的运行速度,带来了巨大的经济效益和社会效益。
Since the 1990s, China's railway has raised the speed of their trains six times. Increasing the speed of travelers' trains has brought huge economic and social benefits.

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