a. 清楚的, 光亮的, 透明的

[ adj ]
(of language) transparently clear; easily understandable
<adj.all>
writes in a limpid stylelucid directions
a luculent oration
pellucid prose
a crystal clear explanation
a perspicuous argument

Luculent \Lu"cu*lent\, a. [L. luculentus, from lux, lucis,
light.]
1. Lucid; clear; transparent. --Thomson.

2. Clear; evident; luminous. `` Most luculent testimonies.''
--Hooker.

3. Bright; shining in beauty. [Obs.]

Most debonair and luculent lady. --B. Jonson.