不清楚的

• vague
• unclear
• ill-defined
• indistinct
• way-out
• blurry
• unapparent
• mixed-up
• unexplained

例句

1. 但在那个时候，一种她既说不上来也讲不清楚的奇怪的感觉，攫住了她。
   However, at that moment a queer feeling she could neither define nor account for came over her.