The end of the Ice Age set off a major movement of species.
冰期的末期引发了物种的大规模移动。
随身英语双语版
People who say that old age sets in earlier, may also be more fatalistic and less likely to visit a doctor or to adopt healthier routines.
那些说老年来得更早的人也可能更听天由命，不太可能去看医生或采取更健康的生活习惯。
百年孤独
Meme, his sister, dividing her time between Fernanda's rigidity and Amaranta's bitterness, at almost the same moment reached the age set for her to be sent to the nuns' school, where they wouldmake a virtuoso on the clavichord of her.
In anthropology, an age set is a social category or corporate social group, consisting of people of similar age, who have a common identity, maintain close ties over a prolonged period, and together pass through a series of age-related statuses. This is in contrast to an age grade, through which people pass individually over time.