Tā / wèi / le / zhè / ge / xiàng / mù / yòng / xīn / liáng / kǔ / zhǔn / bèi / le / hěn / cháng / shí / jiān

他为了这个项目用心良苦，准备了很长时间。

He put a great deal of thought into this project and prepared for a long time.