They waited expectantly while he directed a ruminative yawn toward the white smiling moon.

他们期待地等待着，而他则对着微笑的白色月亮打了一个沉思的哈欠。

To convert a ruminative thought into a productive one, you have to pose it as a problem to be solved.

要将深思熟虑的想法转化为富有成效的想法，您必须将其视为要解决的问题。