◎ 逆水行舟 nìshuǐ-xíngzhōu[sail against the current(foad;stream;tide;wind)] 顶着水流行船。比喻不努力向前进就要往后退,也比喻做事有阻力学如逆水行舟,不进则退-----------------国语辞典：逆著水势行船。勉励人不论学习或做事都要不断努力，否则就会落后退步。如：「学如逆水行舟，不进则退。」英语 lit. a boat going against the current (idiom); fig. you must work harder德语 gegen den Strom (S)
◎ 逆流 nìliú(1) [countercurrent;counter-flow;reflux]∶迎着水流来的方向逆流而上(2) [adverse current]∶跟主流方向相反的水流,比喻反动的、违反总趋势的潮流英语 against the stream, adverse current, a countercurrent, fig. reactionary tendency, to go against the trend德语 Gegenstrom (S)法语 courant contraire, contre-courant
◎ 逆风 nìfēng(1) [go against the wind;head wind](2) 面冲着风;迎风逆风而上(3) 指跟车船行进方向相反的风顶着逆风前进-----------------国语辞典：迎面对著风。《儒林外史．第三三回》：「一路又遇逆风，走了四五天，才走到芜湖。」如：「逆风前进」。反顺风