次生

derivative / secondary / sub-

next in sequence / second / the second (day, time etc) / secondary / vice- / sub- / infra- / inferior quality / substandard / order / sequence / hypo- (chemistry) / classifier for enumerated events: time

to be born / to give birth / life / to grow / raw / uncooked / student

secondary growth of forest

unfamiliar at first but you get used to it / strangers are first meeting, but soon friends / an acquired taste

secondary disaster (e.g. epidemic following floods)