jīngyàn bù quèdìng gǎn

experience a sense of uncertainty

The phrase '经验不确定感' refers to the feeling or perception of not having a clear or definite understanding of a situation or outcome. It can be used in various contexts, such as when someone faces unknown challenges or when the future is unpredictable. This expression captures the emotional aspect of dealing with ambiguity and how it affects one's mindset.