一鼓作气

nǐ bì xū yī gǔ zuò qì bǎ rèn wù wán chéng

你必须一鼓作气，把任务完成。

You must press on without letup until you finish the job.

tā yī gǔ zuò qì wán chéng le gōng zuò

她一鼓作气完成了工作。

She has done her work at one fling.

tā zuì hòu yī gǔ zuò qì pá shang le shān dǐng

她最后一鼓作气爬上了山顶。

With one final spurt, she reached the top of the hill.