kuài / dì / yuán / dào / mén / kǒu / shí / wǒ / xiān / cóng / kuī / shì / jìng / lǐ / què / rèn / le / tā / de / shēn / fèn

快递员到门口时，我先从窥视镜里确认了他的身份。

When the delivery person arrived, I first confirmed his identity through the peephole.