半生不熟

underripe / half-cooked / (fig.) not mastered (of a technique) / clumsy / halting

no; not so / (bound form) not; un-

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

half / semi- / incomplete / (after a number) and a half

ripe; mature / thoroughly cooked; done / familiar; acquainted / experienced; skilled / (of sleep etc) deep; profound / also pr. [shou2]

half a lifetime