解释. 成材 chéngcái. (1) [grow into useful timber] ∶可用的材料. (2) [become a useful person] ∶比喻成为有用的人才. -----------------. 英语 to make sth of oneself, to become a person who is worthy of respect, (of a tree) to grow to full size, to become useful for timber. 德语 …