I could bumble around about geography and this and that, but nothing.

我可以围着地理什么的天马行空地说一大通,但却是一番空谈

耶鲁公开课 - 古希腊历史简介课程节选

It's often fanciful; it relates imaginatively events which it claims Happened in historical time, not in a primordial realm before time, And a myth is designed to explain some kind of practice or ritual or custom or natural phenomenon.

它常常天马行空，关乎一些想象中的事件,它们发生在有历史记载的时期，不是在史前原始王国，所以杜撰故事一般都是来解释一些惯例,或者仪式和风俗或者自然现象。

耶鲁公开课 - 旧约导论课程节选

just being creative enough in my imagination.

我的想象力还不够天马行空。

耶鲁公开课 - 死亡课程节选