◎ 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)