nebulous

/ˈnebjələs/
📚 21134 GRE sat
If you describe something as nebulous, you mean that it is vague and not clearly defined or not easy to describe. 朦胧的; 模糊的

adjective [原级] 朦胧的;星云的,星云状的

Music is such a nebulous thing. 音乐是如此朦胧之物。

后缀: ous 【adjective】 表示具有某种性质的 - indicating having the quality of 原词: nebulous 是通过后缀 【ous】 构成的派生词
neb(云, 雾) + bl + ous → 云状的
单词造句:
网友用 “Nebulous” 造句精选
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。