The point of time from which a series of years is reckoned. 纪年；时代。 A period of time starting from a given point. 纪元。 the Christian era 耶稣纪元；自耶稣降世之后。 A period with notable characteristics. 维多利亚女王时代。 the era of horse and buggy 没有汽车的时代。 One of the seven great divisions of geologic time. 【地】代。 |