"the cold crystalline water of melted snow" "crystal clear skies" "could see the sand on the bottom of the limpid pool" "lucid air" "a pellucid brook" "transparent crystal"
"writes in a limpid style" "lucid directions" "a luculent oration" "pellucid prose" "a crystal clear explanation" "a perspicuous argument"
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)