Usually we say it never goes down, we don't have it going down, cross that out.
一般我们说它永远不会走低,从曲线上来说,它不会下降
耶鲁公开课 - 金融市场课程节选
We have never really nailed this down, I don't think.
我们还没解决这个问题
耶鲁公开课 - 聆听音乐课程节选
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