tā / wèi / le / wán / chéng / zhè / ge / xiàng / mù / dān / jīng / jié / lǜ / zhōng / yú / àn / shí / jiāo / fù / le / chéng / guǒ

他为了完成这个项目殚精竭虑，终于按时交付了成果。

He racked his brains to complete the project and finally delivered the results on time.