I think it was because people were overselling investments and saying, there's no limit to this investment but the blue sky above.

我想这是因为,当时人们过度宣传投资产品,并宣称,投资收益无止境,如头顶的蓝天那么遥远

耶鲁公开课 - 金融市场课程节选

The sky, the world above, is really bound up with the world below.

高高在上的天空与，下面的世界确实密不可分。

耶鲁公开课 - 1945年后的美国小说课程节选

There is this sense of the concerns of the sky somehow, the concerns of the above; the concerns of the transcendent are seeping their way in to the concerns of the material world below.

这有种来自天空，来自天上的眷顾的感觉;,高高在上的天神一点一滴地,眷顾下面的物质世界。

耶鲁公开课 - 1945年后的美国小说课程节选