dì / di / kàn / dào / jiě / jie / hé / péng / you / liáo / de / hěn / kāi / xīn / liǎn / shàng / lù / chū / le / cù / yì

弟弟看到姐姐和朋友聊得很开心，脸上露出了醋意。

Seeing his sister chatting happily with a friend, the younger brother showed his jealousy.