1. What's the matter with you? Why do you look like you are in pain?2. When I stepped into the room, my parents looked serious as if I had made a huge mistake.
 look like you are in pain look serious, sad, uncomfortable, etc.指你生理的不舒服所造成的臉色難看, 指各種的情緒所造成的臉色難看.
1. 你怎麼了, 臉色怎麼這麼難看?2. 當我進房間時, 我父母的臉色很難看, 好像我犯了什麼滔天大錯一樣.