for centuries短语⁷⁵²⁵ 基本例句 好几世纪 For centuries, astronomers have recorded when these dark blemishes on the solar surface emerge, only for them to fade away again after a few days, weeks or months. 几个世纪以来，天文学家已经记录了何时太阳表面出现这些黑暗的污点。在数天，数周或数月后，他们一般都会再次消失。 yeeyan