改: change; transform易: easy河: river移山易河: remove mountains and change the courses of rivers改山治水: transform mountains and harness [tame] rivers江山易改: a friend in need is a friend indeed江山易改,本性难移: Rivers and mountains may be changed but it's hard to alter a man's nature.A leopard never changes his spots.It's easy to change rivers and mountains but hard to change a person's nature.The child is father of the man.You can change mountains and rivers but not a person's nature.江山易改,本性难易: the wolf may lose his teeth, but never his nature江山易改本性难移: a crow is never the whiter for washing herself often; you can change mountains and rivers but not a person's nature江山易改本性难以: you cannot make a crab walk straight江山易改品性难移: a leopard cannot change his spots改山造田可是硬碰硬的事: to transform hills into fields is an extremely tough job改三郎: kaizaburo改三: kaizo改善: improve; ameliorate; perfect; better; mend; modify; improvement; perfection; melioration 改善人民生活 make the people's life better; 改善工作条件 improve the working conditions; 改善经济环境 improve the economic environment; 两国关系已有所改善。 the relations between the two countries have shown some improvement改容易色: one's face changed its hue改善 改修: improvement改日再来: come another day instead改善,改进: improve verb改日: another day; some other day 咱们改日再议吧! let's discuss it another day