Two years later, in seventeen fifty-seven, he produced a small clock that he could hold in his hand.

VOA: special.2010.07.14

The fall of Pylos is generally thought to be around 1200 B.C.; Mycenae itself may be fifty years later, and other places later than that.

人们普遍认为皮洛斯的陨落,大约在公元前一千二百年,迈锡尼城本身也许在五十年以后,其他的地方更晚些

耶鲁公开课 - 古希腊历史简介课程节选

and it wasn't until maybe fifty years later that cars came in

而且差不多直到50年后，才有了汽车，

旧金山的公共交通 - SpeakingMax英语口语达人