词语

劳苦功高出了大力吃了大苦，立了大功。例劳苦而功高如此未有封侯之赏。——《史记项羽本纪》英with toilsome service and with distinctive merits; have worked hard and achived great things;

苦功刻苦的功夫。例语言这东西不是随便可以学好的非下苦功不可。英painstaking efforts;