dà / jiā / zhèng / tán / dào / lǚ / xíng / jì / huà / shí / tā / tū / rán / bǎ / huà / tóu / zhuǎn / dào / le / gōng / zuò / shàng

大家正谈到旅行计划时，他突然把话头转到了工作上。

While everyone was discussing travel plans, he suddenly shifted the thread of the conversation to work.