Jīng / guò / xùn / liàn / gǒu / tīng / dào / líng / shēng / jiù / fēn / mì / tuò / yè / xíng / chéng / le / tiáo / jiàn / fǎn / shè

经过训练，狗听到铃声就分泌唾液，形成了条件反射。

After training, the dog salivated when it heard the bell, forming a conditioned reflex.