时大时小

sometimes big, sometimes small / varying

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

small / tiny / few / young

old variant of 時|时[shi2]

o'clock / time / when / hour / season / period