用來指稱某一特定歷史或文化上的時間段落或分別。Úsese para dar a entender una porción o división temporal histórica o cultural distinta.Te gebruiken voor een specifiek historisch of cultureel tijdvak.The length of time during which something runs its course, characterized by some prevalent or distinguishing condition, circumstance, or occurrence, or by the rule of a particular government or dynasty; a distinct historical or cultural portion or division of time.