tongue-tied (긴장해서) 말이 잘 안 나오는 A: How was your presentation in front of your boss yesterday? B: It was awful. I couldn't sleep at all last night. A: Why? You're prepared well enough for your presentation! B: I was tongue-tied for the first few minutes because I was so nervous. A: 어제 사장 앞에서 발표한 프레젠테이션은 어땠어? B: 끔찍했어. 어제 밤..