tā / huái / yí / yǒu / rén / zài / chē / zhàn / dīng / shāo / suǒ / yǐ / lì / kè / huàn / le / lù / xiàn

他怀疑有人在车站钉梢，所以立刻换了路线。

He suspected someone was tailing him at the station, so he immediately changed his route.