nebulous

adj.

云雾状的；星云的；朦胧的；模糊的

1. Ideas of fairness in taxation are usually nebulous.
   公平这一概念在税收领域一向是模糊不清的。
2. The companyhad a nebulous idea of the next model of car they would manufacture.
   该公司对他们下次要制造的车型只有模糊的概念。

Herbig's Nebulous Objects Near NGC 1999.
Vehicular lamp for nebulous weather
Red and nebulous objects in dark clouds - A survey
The Spectra of Two Nebulous Objects Near NGC 1999.
Nebulin: the nebulous, multifunctional giant of striated muscle.
The Nature of a Nebulous Object in the Chamaeleon T Association
No. 452. Nebulous objects in messier 31 provisionally identified as globular clusters.
Emission-Line Stars Associated with the Nebulous Cluster NGC 2264.
Brain-Body-Mind in the Nebulous Cartesian System: A Holistic Approach by Oscillations
Review article: Gastric atrophy and atrophic gastritis--nebulous concepts in search of a definition