Xiū / fù / zhè / zuò / lǎo / qiáo / xū / yào / zhuān / yè / rén / yuán / zhēn / bú / shì / wán / ér / de

修复这座老桥需要专业人员，真不是玩儿的。

Repairing this old bridge requires professionals; it is certainly no joke.