adverse/adversity

adverse /ˈædvə:s/ adj. 1. 不利的，有害的：an adverse wind (current, circumstances) 逆风(流，境)；Dirt and disease are adverse to the best growth of children. 肮脏与疾病对儿童健康成长不利。2. 逆的，相反的：He is adverse to going abroad.他反对出国。

adversity /ædˈvə:siti/ n. [u] 逆境；厄运；(经济方面的)窘境：Adversity is a good schoolmaster. 逆境为良师。As fire tries gold, so does adversity try virtue.烈火炼真金,逆境见美德。