不能直着想问题，言外之意就是无法冷静清晰地思考。和“懵圈儿”有异曲同工之妙。
例：There are so many people talking. I just can't think straight.
托福口语confused高级表达：Be balled up
Ball是“球”的意思，用这个短语形容“混乱”、“搞得一团糟”也很形象。
例：That dame is so balled up. She doesn’t know anything.
托福口语confused高级表达：Be (as) clear as mud
清楚得像泥巴一样，这种比喻用来说明不清楚的程度也很形象。
例：The explanation was as clear as mud.
托福口语confused高级表达：At a loss
这个短语有种失去方向的意味，它的意思更侧重于不知何去何从的困惑。
例：I don't know what to do. I'm at a loss.