飘渺的英文：
dimly discernible; misty

They arouse instincts which can only be dimly understood.
为什么洞穴能引发人的那种探险本能，人们对此只有一种模模糊糊理解。

Yet he dimly felt that he had only just begun to measure.
不过他隐隐约约地意识到，现在他已经开始权衡。

It appears that he dimly perceived that his time to go had come
他似乎隐约地感觉到自己的死期已到。

It is difficult to discern the truth.
很难了解真相。

Acuteness of perception,discernment,or understanding.
聪明，敏锐敏锐的洞察力、判断力或理解力

discerning power; discrimination; sense; judgment
辨别力

It's a bit misty this morning.
今晨有薄雾。

Dark,misty,and gloomy.
视力模糊的阴暗的，雾状的，朦胧的

His eyes grew misty as he talked.
他说话的时候双眼模糊了。