下定决心xiàdìngjuéxīnTop 15000Meanings1. to make a firm resolutionCharacters used下below定to fix决to decide心heartExamples1我wǒ下定决心xiàdìngjuéxīn要yào在zài三sān年nián之内zhīnèi达成dáchéng目标mùbiāo。I have made up my mind to achieve my goals in three years.