笃定

dǔ dìng chéng gōng

笃定成功

be certain to succeed

jīn tiān tā dǔ dìng huì lái

今天她笃定会来。

She will definitely come today.

sān tiān nèi wán chéng rèn wù dǔ dìng méi wèn tí

三天内完成任务，笃定没问题。

I am certain the task will be finished in three days.

tā dǔ dìng le tā wán chéng mù biāo de xìn niàn

他笃定了他完成目标的信念。

He never lost faith that he would complete his goal.