pellucid (adj.)youdaoicibaDictYouDict[pellucid 词源字典]
"transparent, translucent," 1610s, from Latin pellucidus "transparent," from pellucere "shine through," from per- "through" (see per) + lucere "to shine" (see light (n.)). Related: Pellucidly; pellucidity.[pellucid etymology, pellucid origin, 英语词源]
translucent (adj.)youdaoicibaDictYouDict
1590s, from Latin translucentem (nominative translucens), present participle of translucere "to shine through," from trans- "through" (see trans-) + lucere "to shine" (see light (n.)). Related: Translucently.