他指出，几十年以来一些改革者一直试图结束暑假。
He noted that some reformers have been attempting to end summer vacation for decades.
几十年以来，他一直尝试以心目中的宏伟蓝图重塑世界。
Over the decades, he has tried to remake the world in his own grandiose image.
几十年以来，治疗龋齿的主要手段一直是“钻孔加填补”。
For decades, the main treatment for cavities has been to 'drill and fill'.
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