nebulous
adj. 朦胧的；星云的，星云状的
例句
Music is such a nebulous thing.
音乐是如此朦胧之物。
《柯林斯英汉双解大词典》
The notions we children were able to form of the great world beyond were exceedingly nebulous.
我们这些孩子对外部世界所能形成的认识是非常模糊的。
Performance is a nebulous issue.
性能是一个较为模糊的问题。
