intersperse (v.)youdaoicibaDictYouDict[intersperse 词源字典]
1560s, from Latin interspersus "strewn, scattered, sprinkled upon," past participle of *interspergere, from inter- "between" (see inter-) + spargere "to scatter" (see sparse). Related: Interspersed; interspersing.[intersperse etymology, intersperse origin, 英语词源]