xiū / fù / zhè / tái / lǎo / jī / qì / hěn / fèi / gōng / fu / xū / yào / nài / xīn / hé / jīng / yàn

修复这台老机器很费工夫，需要耐心和经验。

Repairing this old machine takes a great deal of time and effort and requires patience and experience.