Very young children should not be left to play without supervision.

　　不能讓幼兒在沒人照看的情況下獨自玩耍。

　　The book is aimed at very young children.

　　這本書的對象是幼童。

　　She's very young and not very experienced.

　　她很年輕，還不太老練。

　　Even very young premature babies respond to their mother's presence

　　即使是很小的早產(chǎn)兒也會對母親的出現(xiàn)做出反應(yīng)。

　　She's very young. She might change her mind about what she wants todo

　　她很年輕，對于自己想要做的事情也許會改變主意。