Well, stan was frustrated that he wasn't doing 그게 스탠은 그가 뭔가 좀더 중요한 일을 하지 않는다는 것에
You see, Captain, my work has been frustrated... by the lack of an essential ingredient. 하지만 핵심 요소가 빠져서 연구가 정체된 상황입니다
Uh, the last time I saw her, sh-she was frustrated, because she had to leave early. 어, 지난번 엄마를 봤을때 어.. 엄마는 실망했어요 왜냐면 너무 일찍 떠나야해서요
And I was frustrated, frustrated to the point where I thought my heart would burst so I ended up opening the doors of the meditation room. 그러나 화두는 끝내 풀리지를 않구 나는 답답하고 답답해서 가슴이 터질 것처럼 답답해서
That means his face showed that he was frustrated and disappointed. 그 의미는 그의 얼굴이 보여 주는데 그가 실망하고 낙심하였다는 것입니다.